Number System If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is: 88 44 40 80 88 44 40 80 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, (x + y) = 22 and x2 + y2 = 404 Now, 2xy = (x + y)2 - (x2 + y2) 2xy= 222 - 404 = 484 - 404 = 80xy = 40
Number System Sum of two numbers is 15. Two times of the first exceeds by 5 from the three times of the other. Then the numbers will be? 9, 6 10, 5 6, 9 7, 8 9, 6 10, 5 6, 9 7, 8 ANSWER DOWNLOAD EXAMIANS APP
Number System 1260 x 1.45 - 888 x 1.75 = ? 295 367 256 273 295 367 256 273 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1260 x 1.45 - 888 x 1.75= 1827 - 1554 = 273
Number System Twenty times a positive integer is less than its square by 96. What is the integer? 20 Cannot be determined 24 30 20 Cannot be determined 24 30 ANSWER DOWNLOAD EXAMIANS APP
Number System In how many ways can 5 boys be chosen from 6 boys and 4 girls so as to include exactly one girl ? 58 54 60 56 58 54 60 56 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP One girl can be chosen in 4C1 = 4 ways and 4 boys can be chosen in 6C4 = 15 ways ∴ Total number of ways = 4 x 15 = 60 ways.
Number System (12.11)2 + (?)2 = 732.2921 14.2 24.2 17.2 20.2 14.2 24.2 17.2 20.2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 24.2
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