Find the sum of first 25 even numbers.
Sum of first 25 even numbers = n × (n + 1) = 25 × 26 = 650
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Find the sum of first 100 even numbers. |
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Find the sum of first 20 odd numbers. |
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Find the sum of first 500 odd numbers. |
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7, 13, 19, 25, ... ? |
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Find 16th term in the series 7, 13, 19, 25, ... |
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Find 6 + 9 + 12 + . . . + 30 |
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2, 4, 8, 16, ... is a geometric progression(GP) with a = ? and r = ? |
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Find 5th term in the series 5, 15, 45, ... |
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Find 1 + $\dfrac{1}{2} + \dfrac{1}{4}$ +..........up to 5 terms |
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Which least number when added to 2000 makes it exactly divisible by 19? |
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