Question

how many 3 digit natural numbers are divisible by 4 ( medal to the correct answer)

Answer 1

Three digit natural numbers are from 100 to 999.

Answer 2

yes

Answer 3

I got the answer as 223 but my textbook says it is 225

Answer 4

996=249*4
100=25*4
249-25+1=225

Answer 5

Wait i will tell u all how i did it

Answer 6

oh you wanto divide by 4

Answer 7

yes

Answer 8

100 -> 999

100 + 4k

k = 0, 1, ....

Answer 9

100+4k < 1000

solve k

Answer 10

1st term ---- 100

2nd term ----104

3rd term ----108

4th term ----112

We know tn= a + (n-1)d
nth term in this arithmetic progression would be 996 i suppose

So,
996 =100+(n-1)4
It comes to 223

Answer 11

@ganeshie8

Answer 12

looks good, except for the arithmetic error in ur last line

Answer 13

996 =100+(n-1)4

subtract 100 both sides

896 = (n-1)4

divide 4 both sides

224 = n-1

add 1 both sides

225 = n