I have added to my routine and sir honestly IAM glad that I bumped into your channel ☺️ and by learning from your approach of doing quant is really boosting my confidence for GMAT exam.. Thanks a lot
Hey Avi, thanks for the cool video! This trick is indeed useful. 👍 However, I feel that I wasted quite some time while trying out this method for numbers like 5673, 8471, etc. (Both of the numbers were randomly generated. Hard luck! 😂) Can you please pick either of these numbers and explain how to do its prime boxing quickly?
I'm so glad to hear that you're practicing prime boxing! Please remember that the act of prime boxing will improve your number sense, your algebra, and your reasoning - even if you're not doing it in the most efficient way. And, it's likely that you did do it in the most efficient way - some numbers just take a long time to prime box - like 7,919 which is a prime number!
Hi Avi, just playing devils advocate. doesn't prime boxing reduce your sense of logic ? Normally if you prime box, you have to add/ subtract / divide / multiply / find the highest possible exponent of a divisor FOR large numbers If you get good at prime boxing -- you will be more tempted to add / subtract /divide / multiply (i.e perform more algebraic functions) I thougth the goal was to always avoid random algera / algebraic functions Folks who are GOOD at these algebraic functions (adding / subtracting / dividing / multiplyling) , i thought tend to use 'LESS' logic thoughts
That depends on your definition of "algebraic functions". If you mean long addition, long subtraction, long multiplication, or long division (mindless execution of memorized algorithms), then yes, it reduces your sense of logic. But, if you compute 8,901/9 = (9,000 - 99)/9 = 9,000/9 - 99/9 = 1,000 - 11 = 989, (just as an example), then you're improving your quantitative reasoning. You're also improving your algebra, because when you see (a - b)/c it will be very intuitive for you to distribute for a/c - b/c. Thoughts?
Am running into challenges with numbers from 1000 to 9999; it seems that I missing that 29 and 31 are primes and of course am eschewing long divisions for estimation addition/subtraction e.g. 3841/13 is 3900/13-69/13 etc etc
I love your example for dividing 3841/13! Running into challenges is good. Keep in mind there's no time constraint for these exercises. With enough time (and patience) you should be able to prime box any number!
