std 7 science ch 17 swadhyay pothi ,dhoran 7 vigyan swadhyay pothi , dhoran 7 swadhyay pothi ch 17

Let N=55^(3)+17^(3)-72^(3). Then,N is divisible by both 7 and 13 (b) both 3 and 13 both 17 and 7(d) both 3 and 17

Chapter 17 Detailed Explanation Part 7

If (x+2,7) and (2x-1,7) are the co ordinates of the same point then x=

If sinA=15/17 and sinB=7/25 then sin(A+B)=

Find the sum of 23 terms of the AP 17,12,7,2,-3,….

3/7 xx 7/17