Question

find the sum of all two digit numbers greater than 50 which when divided by seven leaves reminder 4​

Answer 1

Answer:

a = 53 , d=7 an= 95

Step-by-step explanation:

an = a+(n-1)d

95=53+(n-1)7

95-53/7 =n-1

n=7

S7= n/2(a+an)

S7 = 7/2(53+95)

S7= 7/2(148)

S7= 7 (74)

S7= 518

Hope it will help u