Number System If A + B = 30 and AB = 94, What is the value of A² + B² ? 824 920 712 625 824 920 712 625 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94 = 900 - 188 = 712
Number System 93296 - 45874 + 20382 - 56817 = ? 109857 109867 109887 109877 109857 109867 109887 109877 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 113678 - 102691 = 109887
Number System 5358 * 51 = ? 273258 273348 273268 273358 273258 273348 273268 273358 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258
Number System Three seventh of a number is 12 more than 40% of that number. What will be the 60% of that number? 248 210 148 126 248 210 148 126 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/7 x – 40/100 x = 12x = 35 * 1235 * 12 * 60/100 = 252/2 = 126
Number System If 70% of an equal to 40% of b, then ratio between a and b is? 7: 4 None 7: 11 4: 7 7: 4 None 7: 11 4: 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 70 a = 40 ba: b = 4: 7
Number System Which choice provides the answer in the following : If 2 * 3 = 36, 5 * 4 = 400, 6 * 2 = 144, 3 * 3 = 81; then, 5 * 5 = ? 625 325 425 525 625 325 425 525 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 625
EXAMIANS