Question

who many two digit no. are divided by 7 b/w 1 to 99

Answer 1

there are 14,21,28... 98 are no. which are divisible by 7

Answer 2

Heya !!



Numbers which are divisible by 7 between 1 to 99 : 7 , 14 , 21......... 98





AP = 7 , 14 , 21.........98





Here,



First term ( A ) = 7.




Common difference ( D ) = 7





Last term ( Tn ) = 98



Number of terms ( n ) = ?




Tn = 98




a + ( n - 1 ) × d = 98



7 + ( n - 1 ) × 7 = 98




7 + 7n - 7 = 98





7n = 98



n = 98/7



n = 14



Hence,


14 numbers are divisible by 7 between 1 to 99.