Question

hi friends plz can anyone solve this problem for me​

Answer 1

Answer:

2) 3+5+7 = 15

3) 32,33,34,35,36,38,40,42,44,45,46,48,49

4)a)Last two digits 82 is not divisible by 4 so the number 6582 is not divisible by 4.

b)Sum of digits in odd places=8+8+0=16

Sum of digits in even places=9+7=16

Difference = 16-16 = 0

Thus, 89870 is divisible by 11.

5) a)21 = 1×3×7

36 = 1×2×2×3×3

54 = 1×2×3×3×3

Common factors = 1, 3

So, H.C.F = 3

b) 15 = 15,30,45,60,75,90,105,120

21 = 21,42,63,84,105,126

Common multiples = 105

So, L.C.M = 105

Hope it is helpful for you...