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? None of these 8 32 27 None of these 8 32 27 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 The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is: 4/5 5/4 3/5 3/10 4/5 5/4 3/5 3/10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1/x - x = 9/20 20x2 + 9x - 20 = 0 20x2 + 25x - 16x - 20 = 0 5x(4x + 5) -4(4x + 5) = 0(4x + 5)(5x - 4) = 0x = 4/5
Number System 64% of 2650+40% 0f 320=? 1578 1824 2096 1247 1578 1824 2096 1247 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1824
Number System Write the next number in the series : 14, 16, 13, 17, 12, 18, 11 .... 15 19 7 1 15 19 7 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 19
Number System Subtracting 30 from a number, the remainder is one fourth of the number. Find the number? 45 40 30 22 1/2 45 40 30 22 1/2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/4 x = 30 => x = 40
Number System A man engaged a servant on the condition that he would pay him Rs.900 and a uniform after one year service. He served only for 9 months and received uniform and Rs.650, find the price of the uniform? Rs.85 Rs.100 Rs.80 Rs.90 Rs.85 Rs.100 Rs.80 Rs.90 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9/12 = 3/4 * 900 = 675 650 ------------- 251/4 -------- 251 --------- ? => Rs.100
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