1.

The sum of 5 numbers in AP is 35 and the sum of their squares is 285. Which of the following is the third term? (a) 5 (b) 7 (c) 6 (d) 8 

Answer»

Correct option (b) 7

Explanation:

Since the sum of 5 numbers in AP is 35, their average would be 7. The average of 5 terms in an AP is also equal to the value of the 3rd term (logic of the middle term of an AP). Hence, the third term’s value would be 7.



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