Number System The sum of two numbers is 25 and their difference is 13. Find their product. 114 104 315 325 114 104 315 325 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then x + y = 25 and x - y = 13.x = 19; y = 6xy = 19 * 6 = 114
Number System In how many different ways can the letters of word 'BIOLOGY' be arranged ? 2520 2678 2367 2410 2520 2678 2367 2410 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In BIOLOGY total 7 letters are there but O comes twice.∴ Number of arrangements = 7!/2! = 2520
Number System What is the difference between the local value of 7 and 5 in the number 2574? 413 570 430 403 413 570 430 403 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 500 – 70 = 430
Number System What should come in place of (?) in the following series ? 10, 19, 30, 43, 58, ? 77 76 78 75 77 76 78 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is: +9, +11, +13, +15, +17
Number System 16.23 x 12.9 + 17.32 = ? 246.687 None of these 236.687 226.687 246.687 None of these 236.687 226.687 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 16.23 x 12.9 + 17.32= 209.367 + 17.32= 226.687
Number System 7.98 x 3.75 + 1.28 x 15.5 = ? 49.765 48.765 46.765 47.765 49.765 48.765 46.765 47.765 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 29.925 + 19.84 = 49.765
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