Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 10 16 12 14 10 16 12 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System What is 432 times 119 ? 53408 51408 50408 52408 53408 51408 50408 52408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
Number System What is the sum of all the composite numbers up to 20? 132 130 131 128 132 130 131 128 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 132
Number System The difference between a two-digit number and the number obtained by interchange the two digits of the number is 27. If the sum of the two digits of the number is 13, what is their product ? 38 37 40 39 38 37 40 39 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ 10x + y - (10y + x) = 27or 9x - 9y = 27∴ x - y = 3 .......(I)x + y = 13 .......(II)From eqn (I) and (II)x = 8 and y = 5.So the number = 85Therefore, product = 8 x 5 = 40
Number System One half of a two digit number exceeds its one third by 6. What is the sum of the digits of the number? 3 5 9 7 3 5 9 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x/2 – x/3 = 6=> x =63 + 6 = 9
Number System 106 * 106 - 94 * 94 = ? 2400 1906 1904 2000 2400 1906 1904 2000 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS