online aptitude test 6

1Find the last digit of the product 8743 x 7156 x 7567 x 8452

2.Two numbers in binary system are 110010011 and 101010101. Find their difference in decimal system.

3.The side of a square is decreased by 10%. What is the percent of change in area?

4.In an examination, 22% students failed. If the number of passed candidates was 420 more than number of failed candidates, then the total number of candidates appeared the examination is?

5.The average age of a family of 6 members is 22 years. If the age of the youngest member be 7 years, the average age of the family at the birth of the youngest member is ……

6.Find the average of squares of first consecutive even numbers from 1 to 26.

7.A’s money : B’s money = 4 : 5 and B’s money : C’s money = 2 : 3. If A has Rs.800, then what amount of money C has?

8.The income of A, B and C are in the ratio 7 : 9 : 12 and their spending are in the ratio 8 : 9 : 15. If A saves 1/4^th of the income then what is the ratio of the savings of A, B and C?

9.A, B and C started a business. The capital of A is three fourth of as much as the capitals of B and C together and the capital of B is two third of as much as the capitals of C and A together. Find the share of C in the annual profit of Rs.1,75,000.

10.If the S.I. for 3 years at 5% is Rs.1200 then find the C.I.