Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 14 10 12 16 14 10 12 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System 106 * 106 - 94 * 94 = ? 1904 2400 1906 2000 1904 2400 1906 2000 ANSWER DOWNLOAD EXAMIANS APP
Number System A man engaged a servant on the condition that he would pay him Rs.900 and a uniform after one year service. He served only for 9 months and received uniform and Rs.650, find the price of the uniform? Rs.85 Rs.100 Rs.80 Rs.90 Rs.85 Rs.100 Rs.80 Rs.90 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9/12 = 3/4 * 900 = 675 650 ------------- 251/4 -------- 251 --------- ? => Rs.100
Number System Write the next number in the series : 14, 16, 13, 17, 12, 18, 11 .... 1 7 19 15 1 7 19 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 19
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: 44 88 40 80 44 88 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 How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 48 36 56 52 48 36 56 52 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
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