This is called a guesstimate or market sizing question! We were taught in first year of undergrad.
There are 2 approaches:
1. The Top-Down Approach (The Funnel)
2. The Bottom-Up Approach (The Building Blocks)
Here is how to solve it using either approach:
With the Funnel, you start with a large, known population and filter it down using logical assumptions.
So with this question I’d
- start with an estimate of Ghana's total population which is around 30 million
- then I’d divide by average household size using 4 people per household. It then becomes 7.5 million households
- then assume that not every household has electricity, so maybe about 75% of the households do. That’s 5.6 million
- then assume that a home has an average of 6 bulbs (one sitting room, two bedrooms, one kitchen, one bathroom/toilet, one outside)
- then assume they replace 50% every year, that’s 3 bulbs bought each year by each household. That’s 3 * 5.6 million. That’s 16.8M bulbs
- but there are also non residential buildings. So I’d use a factor of the household number I already estimated. Say 25%. So 25% of bulbs bought by households are also bought by offices, streets, churches, schools, shops etc. That’s an additional 4.2 million bulbs
- then sum those two together. Thats 16.8 million + 4.2 million. That’s 30 million bulbs each year.
The trick is to be logical, make clear assumptions, and explain why it makes sense. There is no single correct answer. Just the correct analytical method and reasoning.
Can also walk through the bottom-up approach if it’s of interest.
Anthropic engineer:
"You're not supposed to prompt Claude. You're supposed to build a system that prompts itself."
In 45 minutes she shows exactly how Anthropic builds agents that remember, fix their own mistakes and get smarter with every run.
This beats any paid course on agents I've seen.
Watch it, then read the guide on building loops below.
Deleting a number is not extreme. People delete numbers for many reasons, and one of them is simply not wanting to see someone’s status for a while. That’s it.
Deleting a number doesn’t erase a human being from existence. If the person calls, their name still shows trucaller. If you meet them, you’ll still greet them. If life brings you back together, you can still reconnect.
It’s just a boundary, not a death sentence.
What’s extreme is forcing yourself to consume content that is affecting your mental health just to look mature online. What’s extreme is pretending you’re fine until resentment grows teeth.
People mute, unfollow, block, archive, delete all to protect their peace. Deleting a number is just another tool. That’s all.
The internet likes dramatic labels, but in real life, self-preservation is normal.
I heard PayPal is back in Nigeria—DON'T USE IT! They seized our people's money for years and stigmatized us as fraudsters. Now they heard the of millions of dollars being made they want a piece of it? Hell No, we have better local platforms that do it faster and cheaper. FUCK PAYPAL—boycott them and support Naija fintech! 🇳🇬 #BoycottPayPal
PayPal wants to quietly sneak back into Africa and Nigeria like nothing happened. I literally cried when PayPal closed an account we used in 2022 to collect Bet9ja and Betano ad revenue almost $1,000 gone just like that. A friend of mine lost $4,000.
Back then, I rejected a lot of gigs simply because PayPal was the only payment option. I would rather stay jobless than work and have PayPal eventually swallow the money.
You can’t treat us like garbage and then walk back into our lives as if nothing happened. Boycott PayPal. We don’t want them. We’ve moved on.
Another terrible platform is Payoneer. You receive funds, and then they start requesting documents that an average individual in Nigeria can’t easily obtain. In the end, you’re basically forced to leave the money stuck in the account.
I just dropped a full breakdown showing how Nigerians can legally pay 0% tax... even if you earn from freelancing, crypto, YouTube, affiliate marketing, or online business.
This SHORT guide reveals:
- The new 2026 FIRS digital monitoring system
- Why freelancers will start paying 7–24% automatically
- How to switch from Personal Income Tax to 0% Company Income Tax
- The exact CAC structure that makes your income legally tax-free
The step-by-step method to protect your bank inflows from heavy tax deductions
All you need is a phone or laptop.
Like, RT + reply “TAX GUIDE” and I’ll DM you the full document (must be following)
What?? 😂😂😂😂
This is genuinely the funniest thing I've ever read on X this month.
Almost every claim made here is wrong.
No, Chess doesn't have anything to do with 3D. In fact, the strongest correlation for chess ability and cognition is in numerical ability. Visuo-spatial ability has almost no correlation(r < 0.15)
No, Chess isn't entirely about abstract thinking. It's far more about memory and experience. The strongest predictor of chess ability is time spent playing, not raw IQ. There is a modest intelligence component, but it's highly overwhelmed by the predictive power of practice and recall.
That sub you threw at Tunde Onakoya is crass and absurd. The man started learning Chess when he was 10+. If you know anything about chess, you'll know there's a significant age advantage. There's almost no single human alive who started chess after age 10 and became a grandmaster.
The fact that you don't understand how impressive an FIDE rating over 2000 in someone who started chess at that age, especially without access to pro-training, shows you don't know what you're talking about.
The cherry on top is that this whole example was made to serve the simple idea that, actually, the US doesn't love Nigeria even though the genocides are actually happening.
How is that a high IQ understanding? You think the people calling the US to come don't know the US has its own interests? Of course they do. They just don't care. That's why they've been saying explicitly that the US can have as many minerals as the US wants as long as it destroys the terrorists.
Ironically, because you couldn't think ahead, you probably spent months telling Africans how they had so many minerals even as their day-to-day life sucked, and now you're surprised that they would offer up those minerals in exchange for security, and you're supposed to be some 500IQ chess god?
What you need is a better theory of mind. You need to be able to model not just your own thoughts, but also the thoughts and incentives of other people.
If you’re just finishing university in Nigeria and trying to move from $0 to. $5,000–$6,000 in a year, here’s what to do : I'm a living testimony I finished uni 2 years ago.
1. Learn a marketable skill. Something that can actually make you money online, design, marketing, automation, development, customer support, anything with global demand.
2. Stay where there’s stable electricity and internet. You’ll spend a lot on data, so plan for that. Your biggest investment right now is access.
3. Get on LinkedIn. Optimize your profile and start connecting. But don’t fill your network with only Nigerians. If you want to earn in dollars, connect internationally, especially in US states that are strong in tech and remote work. Do your research.
4. Don’t pitch. Build. As a beginner, you have no leverage yet. Don’t try to sell yourself, document your learning, show your progress, and post your journey publicly. People respect growth more than empty claims.
5. Build relationships through DMs. Don’t just send one message and disappear. Track who you’ve messaged with a Google Sheet so you can follow up, personalize, and build a genuine connection.
6. Use those relationships for freelance opportunities. If your Upwork isn’t verified yet, onboard clients from LinkedIn first. Then, once Upwork verifies you, you can use it for payments and credibility.
7. Always have a backup plan. When things get tight, you still have LinkedIn, DMs, and Upwork as your lifelines for finding opportunities.
8. Network smart. Get close to female freelancers or tech professionals, they often have stronger networks and are more open to sharing opportunities.
Broke ones will rise again.
But make LinkedIn your best friend.
My advice for you is simple: in addition to your academics find a skill or passion that drives you. CGPA isn't everything. And this isn’t just for you, but also for undergraduates who beat themselves up for not having a first-class.
I say this every time I'm chanced, the truth is, life isn’t fair. Not everyone who wanted a first class got one, not because they weren't smart or they were lazy, but they had real struggles.
I had a roommate back then in year one, a smart guy. But he wasn't on a first-class or 2:1 then. Why? Because most of the time he was hustling just to survive school. One day he was doing bricklaying, another day he was "warming" the same pot of rice for 2-3 days. Yet, despite all that, he never lost passion for his course.
With support from other students, he went on to start a club on campus and did something really innovative. The last time we spoke, he told me he had landed a job from a company in Finland.
That’s why I always say school is not a scam. It’s not just about the grades, it’s about the environment, the opportunities, the connections, and the skills you can build. Not everyone will have a first class, but you can still create something meaningful with what you have.
So my advice for you is: try as hard as you can to come out with the best grades possible, it makes the journey easier for you. But don’t just stick with the grades alone; build skills and everything else that makes you indispensable.
@Cinthya_Dimma I thought the same, he even mentioned that he may not be an exception to the advice he dished out. The outrage is possibly because of the tweet he quoted.
I won’t fly #IbomAir again. The airline could remove the passenger without dehumanising her. No matter the offence, exposing the girl's nudity violates her. In a rational society, the airline would face severe consequences.
If we allow this Injustice to Raye go unchecked.
Then we really aren’t good people in this country.
@officialnyscng why hasn’t she gotten her certificate after Her service year?