Question

29. Find the sum of first 10 terms of the AP 2, 7, 12,​

Answer 1

Answer:

245

Explanation:

Sn = n/2[2a + (n-1) d]

d = 7 - 2 = 5

a= 2

n= 10

Sn = 10/2 [ 2(2) + (10 -1) 5 ]

= 5[ 4 +9(5) ]

= 5[ 4 + 45]

= 5[ 49]

= 245

Answer 2

Answer:

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