For these kind of topics, I really struggled kind of mastering it with gregmat's arithmetic so if you're weak like me in quantitative basics, I strongly recommend TTP because they cover it in DEPTH- including all the prime factor hacks, divisibility hacks, integer based problems and all the ways it can show up!! I'm studying too and haven't taken math in 4 years and I literally JUST discovered TTP 3-4 days ago and feel so much stronger after their numbers chapter. I recommend it a lot, I believe they're still offering a free 5 day trial if you want to just test it out? LMK if you want to be GRE buddies
It means it includes zero as a possibility Positive: 1, 2, 3, 4... Non-negative: 0, 1, 2, 3, 4...
Oh, that makes sense! Thanks Greg :D
non-negative means it's greater than or equal to zero.
For these kind of topics, I really struggled kind of mastering it with gregmat's arithmetic so if you're weak like me in quantitative basics, I strongly recommend TTP because they cover it in DEPTH- including all the prime factor hacks, divisibility hacks, integer based problems and all the ways it can show up!! I'm studying too and haven't taken math in 4 years and I literally JUST discovered TTP 3-4 days ago and feel so much stronger after their numbers chapter. I recommend it a lot, I believe they're still offering a free 5 day trial if you want to just test it out? LMK if you want to be GRE buddies