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Start learning 50% faster. Sign in nowPrime numbers between 35 and 60 = 37, 41, 43, 47, 53, 59, 61, and 67. Required sum = 37 + 41 + 43 + 47 + 53 + 59 + 61 + 67 = 408 Number of prime numbers between 35 and 70 = 8 Required average = (408/8) = 51
The ratio of age of A and his son is 5:1. If the difference of their ages 6 years ago is 24, then find the sum of the ages of A and his son together 11 ...
The ratio of the current ages of ‘A’ and ‘B’ is 4:7, while the ratio of the current ages of ‘B’ and ‘C’ is 3:2. If the difference betwee...
The total age of A, B and C eight years hence will be 98 years. Find the age of C three years hence, if the present age of A and B is 30 years and 25 ye...
The average age of 26 smdents in a class is 15 years. If teacher's age is included in it, then the average will increase by one. What is the teacher's a...
Difference between the ages of A and B is same as the difference between the ages of B and C. The difference between the ages of A and C is 7 years. If ...
The ratio of the present ages of P and Q is 8:5 respectively. If the age of P 10 years hence from now will be 100% more than the age of Q 4 years ago fr...
When 11 years is subtracted from the present age of A and the obtained result is divided by 3, then the present age of his nephew is obtained. If the pr...
Amit age after 15 years will be 2 times his age 2 years back. What is the present age of Amit?
