Number System What is the difference between the local values of 3 in the number 53403? 2997 3030 0 3003 2997 3030 0 3003 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3000 – 3 = 2997
Number System If A + B = 30 and AB = 94, What is the value of A² + B² ? 712 625 824 920 712 625 824 920 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 If 5/7 of a number is 145, what is 180% of that number ? 365.4 355.4 345.4 375.4 365.4 355.4 345.4 375.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 5/7 = 145∴ x = 145 x 7/5 = 203Now, 203 x 180/100 = 365.4
Number System The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference of the two digits of the number ? 3 4 1 2 3 4 1 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (10x + y) - (10y + x) = 36,9(x - y) = 36/9 = 4
Number System 20% of the total number of students in a school play football. How many students do not play football if the total number of students in the school is 7600 ? 6000 5800 5976 6080 6000 5800 5976 6080 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 20% of 7600 = 1520Therefore, students who do not play football = 7600 - 1520 = 6080
Number System If HKUJ means FISH, what does UVCD mean ? STAB STAK STAM STAR STAB STAK STAM STAR ANSWER EXPLANATION DOWNLOAD EXAMIANS APP STAB
EXAMIANS