Number System What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12 2 7 9 3 2 7 9 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9
Number System In a two-digit number, if it is known that its unit's digit exceeds its ten's digit by 2 and that the product of the given number and the sum of its digits is equal to 144, then the number is: 26 42 46 24 26 42 46 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x. Then, unit's digit = x + 2. Number = 10x + (x + 2) = 11x + 2 Sum of digits = x + (x + 2) = 2x + 2 (11x + 2)(2x + 2) = 144 2x2 + 26x - 140 = 0 (x - 2)(11x + 35) = 0 x = 2Hence, required number = 11x + 2 = 24.
Number System In how many different ways can the letters of the word TEST' be arranged ? 16 10 8 12 16 10 8 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word TEST consists of 4 letters in which T comes twice ∴ Number of arrangements= 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12
Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 95 103 92 99 95 103 92 99 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
Number System The product of two successive numbers is 4556. Which of the following is the larger of the two numbers? 68 63 78 67 68 63 78 67 ANSWER DOWNLOAD EXAMIANS APP
Number System [(18.6 x 4.5) + (7.8 ÷ 0.24)] ÷ 3.2 = ? 25.3125 46.3125 26.3125 36.3125 25.3125 46.3125 26.3125 36.3125 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 83.7 + 32.5/3.2 = 116.2/3.2 = 36.3125
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