Number System The sum of two numbers is 25 and their difference is 13. Find their product. 104 114 325 315 104 114 325 315 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then x + y = 25 and x - y = 13.x = 19; y = 6xy = 19 * 6 = 114
Number System 16.23 x 12.9 + 17.32 = ? 246.687 236.687 None of these 226.687 246.687 236.687 None of these 226.687 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 16.23 x 12.9 + 17.32= 209.367 + 17.32= 226.687
Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 16 14 10 12 16 14 10 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System 7.8% of 12.5 + 2.5% of 161 = ? 9 12 2 5 9 12 2 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7.8 x 12.5/100 + 2.5 x 161/100= 0.975 + 4.025= 5
Number System 4.78% of 1255 + 3.24% of 440=0.5% of ? 14849 12849 11849 13849 14849 12849 11849 13849 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.5 x ?/100 = 4.78 x 1255/100 + 3.24 x 440/100= 59.989 + 14.256∴ ? = 74.245 x 100/0.5 = 14849
Number System 1089/? = ?/1296 1188 1082 1348 1278 1188 1082 1348 1278 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 1089 x 1296(?)²= (11 x 11 x 9) x (12 x 12 x 9)(?)= 11 x 12 x 9= 1188
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