The multiples of a nu (4) is a multiple of every number 11. The sum of first five even multiples of 2 is (2) 32 (3) 40 (4) 30 12. The sum of first 8 multiple of 3 is (1) 108 (2) 110 (3) 107 (4) 105 13. The numbers x + 2x + 4 are all prime so mis (1) 3 (2) 2 (3) 11 (4) 17 14. Which of the following is a prime factor? (1) 842 2 x 3 x 7 (2) 112 =2x2x14x2 (3) 70 = 14x 5
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Answers
Answered by
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Explanation:
First term (a)=3
Common difference (d)=3
No. of terms (n)=8
Sum of terms (Sn )=?
As we know that, in an A.P.,
S n = 2n
[2a+(n−1)d]
∴S 8 = 2 8
[2×3+(8−1)×3]
⇒S 8 =
4×(6+21) ⇒
S 8 =4×27=108
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Answered by
1
Answer:
First term (a)=3
Common difference (d)=3
No. of terms (n)=8
Sum of terms (Sn )=?
As we know that, in an A.P.,
S n = 2n
[2a+(n−1)d]
∴S 8 = 2 8
[2×3+(8−1)×3]
⇒S 8 =
4×(6+21) ⇒
S 8 =4×27=108
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