271. The polar form of (i25)3 is
272. How many terms of the A.P. 1, 4, 7, 10, … are needed to give the sum 715.
273. -6 ÷ (-8 / 17)
274. If the sum of p terms of an A.P. is q and the sum of q terms is p, then the sum of p + q terms will be
275. √14 is called
276. Find the number of words formed by permuting all the letters of SERIES
277. How many 3 digit numbers with distinct digits can be formed such that the product of the digits is the cube of a positive integer?
278. At what rate% per annum will Rs 64000 become Rs68921 in 1.5 years interest being compounded half yearly?
279. The cube root of 127 up to four places of decimal are
280. If in the expansion of (1 + x)15 the coefficient of (2r +3)th and (r -1)th terms are equal then the value of r is