Number System 732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ? 651.68 641.68 631.68 621.68 651.68 641.68 631.68 621.68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1361.20 - 709.52 = 651.68
Number System A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is: 18 81 24 42 18 81 24 42 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's and unit's digit be x and 8/x respectively. Then, (10x + 8/x) + 18 = 10 * 8/x + x 9x2 + 18x - 72 = 0 x2 + 2x - 8 = 0 (x + 4)(x - 2) = 0 x = 2 So, ten's digit = 2 and unit's digit = 4. Hence, required number = 24.
Number System 106 * 106 - 94 * 94 = ? 2400 1906 2000 1904 2400 1906 2000 1904 ANSWER DOWNLOAD EXAMIANS APP
Number System 480% of 350 + 620% of 275 = ? 2385 3385 4385 5385 2385 3385 4385 5385 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 480 x 350/100 + 620 x 275/100= 1680 + 1705 = 3385
Number System In how many different ways can the letters of word "SENTENCE" be arranged ? 3360 2360 3260 6460 3360 2360 3260 6460 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 8!/3! 2! = 40320/12 = 3360
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 11 5 3 7 11 5 3 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
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