Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 65 55 45 35 65 55 45 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x² - (21)² = 1584= x² - 441 = 1584 = x² = 1584 + 441 = 2025∴ x = √2025 = 45
Number System If (17)3 is subtracted from the square of a number, the answer so obtained is 2143. What is the number ? 81 83 84 82 81 83 84 82 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (17*17*17) = 2143or x² = 2143 + 4913 = 7056∴ x = 84
Number System A bag contains eighteen 25-paise coins, seventeen 50-paise coins, twentytwo one-rupee coins, nine 2-rupee coins and three 5-rupee coins. What is the total amount in the bag (Ans in rupees) ? Rs. 62 Rs. 68 Rs. 79 Rs. 74 Rs. 62 Rs. 68 Rs. 79 Rs. 74 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total = 18/7 + 17/2 + 22 + 9 x 2 + 3 x 5 = 4.5 + 8.5 + 22 + 18 + 15 = Rs 68
Number System The sum of five consecutive numbers is 190. What is the sum of the largest and the smallest number ? 73 76 75 74 73 76 75 74 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4= 190= 5x + 10 = 190= 5x = 190 - 10 = 180= x = 180/5 = 36The largest number = 36 + 4 = 40∴ Required sum = 36 + 40 = 76
Number System Find the nearest to 25268 which is exactly divisible by 467? 25308 25218 25208 25228 25308 25218 25208 25228 ANSWER DOWNLOAD EXAMIANS APP
Number System Three numbers are in ratio of 3: 4 :5. If the sum of first & third numbers is more than second number by 52, which will be largest number? 65 78 23 34 65 78 23 34 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 65
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