Number System In how many different ways can the letters of the word TEST' be arranged ? 16 10 8 12 16 10 8 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word TEST consists of 4 letters in which T comes twice ∴ Number of arrangements= 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12
Number System 50% of 8/15 of 9/4 of 5/3 of 333 = ? 333 555 666 444 333 555 666 444 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 50% of [8x9x5/15x4x3 x 333]= 50% of 666= 333
Number System 93296 - 45874 + 20382 - 56817 = ? 109867 109877 109887 109857 109867 109877 109887 109857 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 113678 - 102691 = 109887
Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 160 28 12 180 160 28 12 180 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
Number System A man engaged a servant on the condition that he would pay him Rs.710 and a uniform after a year service. He served only for 8 months and got Rs.460 and a uniform. Find the price of the uniform? Rs.40 Rs.25 Rs.30 Rs.20 Rs.40 Rs.25 Rs.30 Rs.20 ANSWER DOWNLOAD EXAMIANS APP
Number System What is the value of ? in the following equations ? 72/? = ?/50 80 60 100 40 80 60 100 40 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 72 x 50= (6 x 6 x 2) x (5 x 5 x 2)= (6 x 5 x 2)² = (60)²∴ ? = 60
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