Number System If (17)3 is subtracted from the square of a number, the answer so obtained is 2143. What is the number ? 84 82 83 81 84 82 83 81 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (17*17*17) = 2143or x² = 2143 + 4913 = 7056∴ x = 84
Number System What least number should be added to 8602 to make it a perfect square ? 41 36 51 47 41 36 51 47 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP So, (93)² = 8649So, the required number to be added to make a perfect square = 8649 - 8602 = 47
Number System 217 * 217 + 183 * 183 = ? 80698 80578 79698 81268 80698 80578 79698 81268 ANSWER DOWNLOAD EXAMIANS APP
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.100 Rs.80 Rs.85 Rs.90 Rs.100 Rs.80 Rs.85 Rs.90 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9/12 = 3/4 * 900 = 675 650 ------------- 251/4 -------- 251 --------- ? => Rs.100
Number System What should come in place of the question mark (?) in the given number series ? 888, 888, 444, 148, ?, 7.4 39 38 37 36 39 38 37 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let x be the missing number.Then888/888 = 1,888/444 = 2,444/148 = 3,148/x = 4= x = 148/4 = 37 and 37/7.4 = 5
Number System The difference between 35% of a number and 18% of the same number is 93.5 then what is the 40% of that number ? 232 245 220 225 232 245 220 225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Diff = (35 - 18)% of x = 93.517x/100 = 93.5Therefore, x = 550Therefore, 40% of 550 = 220
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