Mathematics
The sum of the digits of a two-digit number is 9. Also, nine times this number is twice the number obtained by reversing the order of the digits. Then the original number is :
90
18
81
54
Related Questions
2 tables and 3 chairs together cost ₹ 1,075 and 3 tables and 8 chairs together cost ₹ 1,875. The cost of 4 tables and 5 chairs together will be :
₹ 2,750
₹ 2,705
₹ 2,075
₹ 2,057
Five years ago, Bharat was thrice as old as Rajat. Ten years later, Bharat will be twice as old as Rajat. The difference between their present ages is :
10 years
20 years
30 years
35 years
A bag contains some one-rupee coins and some fifty-paisa coins. The total amount is ₹ 140. If half of the one-rupee coins are replaced by fifty-paisa coins, then the amount becomes ₹ 115. The coins of each type in the bag initially, were :
one-rupee coins = 100 and fifty-paisa coins = 80
one-rupee coins = 80 and fifty-paisa coins = 100
one-rupee coins = 110 and fifty-paisa coins = 80
one-rupee coins = 70 and fifty-paisa coins = 90