The average of a non-zero number and its square is 5times the number. The number is-

A 9
B 17
C 29
D 295

Correct Answer: 29

Let, the number is x So, (x + x2) /2 = 5x x + x2 = 10x x2 - 10x + x = 0 x2 = 9x x = 9
Bissoy MCQ
#পিএসসি ও অন্যান্য নিয়োগ পরীক্ষা #গণিত #গড় (Average) #পল্লী কর্ম সহায়ক ফাউন্ডেশনের অ্যাসিসট্যান্ট ম্যানেজার-০৭.০৩.২০১৪

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