Subject :IMO Class : Class 3
How many four digit numbers can be formed, using digits 8, 4, 0, 7 each digit used only once?
A18
B24
C16
D12
Ans 1:
Class : Class 5
Ans 2:
Class : Class 5
a- 18
Ans 3:
Class : Class 6
Ans 4:
Class : Class 6
Option a answer 18 is correct the rest are false options because os zero. Zero cannot come in thousands that s why it cannot be 24.
Ans 5:
Class : Class 5
because of 0 at first position, 6 possibilities are reduced from 24. so it is 18
Ans 6: (Master Answer)
Class : Class 1
The correct answer is A - 18
Ans 7:
Class : Class 5
24
Ans 8:
Class : Class 3
A,18 is correct answer