Q51 In a number 85165452 , find multiplication of numbers of rank 2,4 and 7.

Q52 In a number 85165452, find difference of multiplication of rank 8th and 4th from left to 7th and 1st from left.

Q53 In a number 846546109 find sum of even rank numbers?

Q54 In a number 53149034 find sum of odd rank numbers?

Q55 In a number 73424721, find the difference of sum of odd and even rank numbers.

Q56 In a number 95975064031, find the sum of prime ranked numbers.

Q57 In a row of clothes, t-shirt is seventh from left and jeans at 15th from right. They are tried by a man and mistakenly placed at each other's position. Now jeans is at 25th from right t-shirt from left is?

Q58 In a number 84815752657, find ratio of multiplications of odd and even ranked numbers.

Q59 In a series from 1 to 10, the position of seven from right is?

Q60 P, Q and R are ranked 20, 23 and 25 respectively from the top of the class of 100 students. What is the rank of P and R from the bottom?