1
WB JEE 2009
Subjective
+2
-0

Find the sum of the first n terms of the series 0.2 + 0.22 + 0.222 + ......

2
WB JEE 2011
Subjective
+2
-0

The harmonic mean of two numbers is 4. Their arithmetic mean A and the geometric mean G satisfy the relation 2A + G2 = 27. Find the numbers.

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NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12