Mathmetics
ISBT Mathmetics for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams
Q21. |
|
| 1) | 40 | 2) | 80 |
| 3) | 120 | 4) | 200 |
| 5) | None of these | ||
Answer : 40
Explanation :
Explanation :
Let the numbers be 3x, 4x and 5x.
Then, their L.C.M. = 60x.
So, 60x = 2400 or x = 40.
The numbers are (3 x 40), (4 x 40) and (5 x 40).
Hence, required H.C.F. = 40.
View AnswerQ22. |
|
| 1) | 12 | 2) | 16 |
| 3) | 24 | 4) | 48 |
| 5) | None of these | ||
Answer : 48
Explanation :
Explanation :
Let the numbers be 3x and 4x. Then, their H.C.F. = x. So, x = 4.
So, the numbers 12 and 16.
L.C.M. of 12 and 16 = 48.
View AnswerQ23. | Find the two natural numbers whose sum is 85 and the LCM is 102 |
| 1) | 1) 30 and 55 | 2) | 2) 17 and 68 |
| 3) | 3) 35 and 55 | 4) | 4) 51 and 34 |
| 5) | 5) None of these | ||
Answer : 4) 51 and 34
View AnswerQ24. | The H.C.F. of two numbers is 11 and their L.C.M. is 693. If one of the numbers is 77, find the other. |
| 1) | 1) 909 | 2) | 2) 119 |
| 3) | 3) 66 | 4) | 4) 99 |
| 5) | 5) None of these | ||
Answer : 4) 99
View Answer