Number System The sum of a number and its reciprocal is one-eighth of 34. What is the product of the number and its square root? 27 None of these 8 32 27 None of these 8 32 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,x + 1/x = 34/8 8x2 - 34x + 8 = 0 4x2 - 17x + 4 = 0 (4x - 1)(x - 4) = 0 x = 4required number = 4 * √4 = 4 * 2 = 8.
Number System 1051.64 - 159.42 - 96.84 + 162.37 - 940.26 + 504 = ? 491.49 511.49 521.49 501.49 491.49 511.49 521.49 501.49 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1718.01 - 1196.52 = 521.49
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1092 1192 1082 1200 1092 1192 1082 1200 ANSWER DOWNLOAD EXAMIANS APP
Number System A man engaged a servant on the condition that he would pay him Rs.710 and a uniform after a year service. He served only for 8 months and got Rs.460 and a uniform. Find the price of the uniform? Rs.20 Rs.30 Rs.40 Rs.25 Rs.20 Rs.30 Rs.40 Rs.25 ANSWER DOWNLOAD EXAMIANS APP
Number System 6.4 x 8.5 x 25/3.2 x 12.5 = ? 2.3 3.4 4.5 5.6 2.3 3.4 4.5 5.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 6.4 x 8.5 x 2.5/3.2 x 12.5 = 3.4
Number System What least number must be subtracted from 2641 so that the remainder left, when divided by 10,15 and 25, is 7 in each case ? 94 81 84 87 94 81 84 87 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP LCM of 10, 15, 25 = 150When we drive 2641 by 150 the remainder is 91.But the remainder should be 7.So, the number to be subtracted from 2641 is 91 - 7 = 84.
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