1.If a sum is lent at 5% compound interest per annum for 2 year. What is the ratio of the amount to the principal?
D.None of these
2.A number when added to its two thirds is equal to 35. Find the number
Sol: Let the number be X
Then, According to the question,
3.Rs.770 have been divided among A,B and C in such a way that A receives 2/9th of what B and C together receive. Then A’s share is Rs-
Sol: Given, A=(2÷9)(B+C)
A’s part=(770×2/11)=Rs 140
4.The difference between the highest and lowest five digits number using 0,3,6,8 and 9 digits (each digit using once time)-
Sol: Largest number of 5 digits= 98630
Smallest digit of 5 digits=30689
Hence, required difference=98630-30689=67941
5.When a number is divided by 387, the remainder obtained is 48. If the same number is divided by 43, then the remainder obtained will be-
Sol: Suppose quotient=k
Then, number= 387 k+48
Hence, we divided this number by 43, remainder=5
6.The sum of the greatest and smallest 4 digit numbers is-
Sol: The greatest 4 digit number= 9999
The smallest 4 digit number= 1000
7.The area of square, whose perimeter is 48 m is-
Sol: Side of the square=Perimeter/4
Area of the square=Side× Side
8.What is the percentage of 500gm is 4 kg?
Sol: 1 kg =1000gm
Hence required percentage=500×100/4000=12.5%
9.60% of that the students in a school are boys. If the number of girls in the school is 300, then the number of boys is-
Sol: Here 40% are girl in a school.
10.What should be taken out of 3/7 to get 2/7?
Sol: Let x be taken out.