how many three digits are divisible by 7 ??
solve my proper method
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hey.....MATE !!
here's ur solution ,
two digit no. which are divisible by 7 are
14 ,21 ,28 ,......98
it forms an AP.
a = 14 , d = 7 and an = 98
an = a + ( n - 1 ) d
98 = 14 + ( n - 1 ) 17
98 -14 = 7n - 7
84 + 7. = 7 n
91 = 7n
n = 13.
hope it might be helpful☺☺☺
here's ur solution ,
two digit no. which are divisible by 7 are
14 ,21 ,28 ,......98
it forms an AP.
a = 14 , d = 7 and an = 98
an = a + ( n - 1 ) d
98 = 14 + ( n - 1 ) 17
98 -14 = 7n - 7
84 + 7. = 7 n
91 = 7n
n = 13.
hope it might be helpful☺☺☺
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