Number System What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12 9 2 3 7 9 2 3 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9
Number System If the difference between the squares of two consecutive numbers is 47, what is the smaller number ? 23 25 26 24 23 25 26 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23
Number System 732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ? 641.68 621.68 651.68 631.68 641.68 621.68 651.68 631.68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1361.20 - 709.52 = 651.68
Number System The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers? 92 Cannot be determined 70 29 92 Cannot be determined 70 29 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x and units digit by y.Then,(10x + y) - (10y + x) = 639(x - y) = 63x - y = 7Thus, none of the numbers can be determined.
Number System If the sum of five consecutive even numbers A, B, C, D and E is 130, what is the product of A and E ? 780 660 720 840 780 660 720 840 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive even numbers be A = 2x, B = 2x + 2, C = 2x + 4, D = 2x + 6 and E = 2x + 8= A + B + C + D + E = 130= 10x + 20 = 130∴ x = 130 - 20/10 = 11Therefore, product of A and E= 22 x 30 = 660
Number System 5525 ÷ 17 = √? 105625 93025 112225 99225 105625 93025 112225 99225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √? = 5525/17 = 325∴ ? = (325)² = 105625
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