Related Questions

How many 5 digit numerals have 9 as the first digit, 3 or 6 as the third digit, and no digit repeated?
A 672
B 762
C 572
D 567
How many bits are required to encode all twenty six letters ten symbols, and ten numerals?
A 5
B 6
C 2
D 3
E None of the above
If you add up the digits of a three -digit number you get 18 . The ten's digit is twice the hundred's digit and the hundred's digit is 13 the unit's digit. What is the number?
A 246
B 369
C 531
D 855
A popular website requires users to create a password consisting of digits only. If no digit may be repeated and each password must be at least 9 digits long, how many passwords are possible ?
A 9!+10!
B 2×10!
C 9!×10!
D 9!
How many different numbers of two digits can be formed with the digits 1, 2, 3, 4, 5, 6; no digit being repeated?
A 40
B 30
C 35
D 45
A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is:
A 6 hours
B 10 hours
C 15 hours
D 30 hours
The average of the first and the second of three numbers is 15 more than the average of the second and the third of these numbers. What is the difference between the first and the third of these three numbers?
A 15
B 45
C 60
D None of these
The average of the first and the second of three numbers is 15 more than the average of the second and the third of these numbers . what is the difference between the first and the third of these three numbers?
A 15
B 45
C 60
D None of them
The average of the first and the second of three numbers is 15 more than the average of the second and the third of these numbers .what is the difference between the first and the third of these three numbers?
A 15
B 45
C 60
D None of these
Of the three numbers, the average of the first number and the second number is 37 more than the average of second number and third number. What is the difference between the first and the third number?
A 74
B 73
C 37
D cannot be determined

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