The 9th term of an A.P. is 449 and 449th term is 9. The term which is equal to zero is
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If Sn denote the sum of n terms of an A.P. with first term a and common difference d such that is independent of x, then
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The sum of n terms of two A.P.’s are in the ratio 5n + 4 : 9n + 6. Then, the ratio of their 18th term is
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The sum of first 20 odd natural numbers is
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The next term of the A.P., . . . . . .
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How many 2-digit positive integers are divisible by 4 or 9?
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What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3?
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Given A = 265 and B = (264 + 263 + 262 + ..... +20), which of the following is true?
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The sum of the three numbers in A.P is 21 and the product of the first and third number of the sequence is 45. What are the three numbers?
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If a rubber ball consistently bounces back of the height from which it is dropped, what fraction of its original height will the ball bounce after being dropped and bounced four times without being stopped?
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The sum of third and ninth term of an A.P is 8. Find the sum of the first 11 terms of the progression.
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