Question
How many pairs of digits are there in the number
'639273965', which has as many digits between them in the number (both forward and backward) as in the number series?Solution
There are only four number pairs (26, 79, 56 and 79) , which have as many digits between them as in the number series.
Find the third proportion of √ 2, √ 7 and √ 21.  Â
A sum is distributed among A, B and C is the ratio 8: 4: 3 and A divides its part between D and E in the ratio 9: 7, then what is the ratio of part of C...
Find the fourth proportion of (k + 2), (3k + 6) and (5k + 10). (Note: 'k' is the smallest odd prime number.)
A bag contains coins of Rs 1, 50p, and 25p and the ratio of their values is 15: 12: 7. If there are a total of 1340 coins then what will be the total nu...
Total population of city P and Q is 3360 and 4850 respectively. If the ratio of number of males to females in city is P and Q is 5:3 and 3:2 respectivel...
Two years ago the ratio of annual salary of three friends P, Q and R is 4 : 3 : 5. Every year since then the salary of P, Q and R increases by 10%, 12% ...
'A', 'B' and 'C' distributed Rs. 1440 among themselves in the ratio 7:5:4, respectively. 'A' gave some amount to 'B' such that new amount with 'B' is th...
What must be added to each term of the ratio 2:9 so that it may equal to 4:5?
In an office, the ratio of the number of males to number of females is 13:9. If 3 males joined the class and 7 females left the class, then the ratio of...
- The mean proportional of 10 and 40 is _____.
