Question 5 - Figure it out - Page 125, 126 - Chapter 5 Class 6 - Prime Time (Ganita Prakash)

Transcript

Question 5 The teacher asked if 14560 is divisible by all of 2, 4, 5, 8 and 10. Guna checked for divisibility of 14560 by only two of these numbers and then declared that it was also divisible by all of them. What could those two numbers be?Okay, let’s observe If a number is divisible by 10, then it is divisible by 2 & 5 also Example: 30 is divisible by 2, 5, 10 If a number is divisible by 8, then it is divisible by 2 & 4 also Example: 64 is divisible by 2, 4, 8 Thus, Guna checked divisibility by 10 & 8