1.
Read the question given below
2.
The sum of first n odd natural numbers is
3.
The value of a30-a20 for the A.P. -9,-14,-19 is
4.
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5.
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6.
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7.
Read the question given below
8.
Read the question given below
9.
How many terms are there in A.P. 1 + 5+ 9+……149 ?