Logic Square Technologies
The ratio of boys to girls in a class in 7 to 3. Among the options below, an acceptable value for the total number of students in the class is: 21 37 50 73 ans: 50 A bank offers 5% compound interest calculated on half-yearly basis. A customer deposits $8,000 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is: * $600 $605 $16,600 $16.605 Ans: $605 Let the representation of a number in base 3 be 210. What is the hexadecimal representation of the number? 15 21 D2 528 Ans: Firstly convert base 3 into a decimal number system(Base 10): (210)3=(x)10⟹0∗30+1∗31+2∗32=(21)10 Now convert (21)10 into a hexadecimal system. dividing by 16 that is: (21)10=(z)16 ∴z=(15)16 Option A is correct. If the number 458X4 is divisible by 9, find the value of the digit marked as X. 4 5 6 7 Ans: 6 There are 8 batteries, but only 4 of them work. You have to use them for a flashlight which needs only 2 working batteries
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