Question

How many three digit number are divisible by 87

Answer 1

lowest 3 digit no. = 174 (87 × 2)
highest 3 digit no = 957 (87 × 11)
a= 174 , d = 87 and last term 957
We've to use last term formula
957 = 174+ ( n -1)×87
957= 174 + 87n - 87
957= 87 + 87n
957-87 = 87n
870 = 87n
n = 10th term

thanksssssssss

Answer 2

$957 - 174 \div 87 + 1$
$9 + 1$
10