MBA Exam

How many 4-digit numbers are there whose decimal notation contains not more than two distinct digits?

1) 672
2) 576
3) 360
4) 448

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MBA Other Question

A bus has a total of 7 tyres, 6 running tyres and 1 spare.iT HAS RUN A TOTAL OF 42000 miles with each tire running the same number of miles.If replacing one tire by another is called a "change",what is the minimum number of changes required in covering 42,000 miles?

1) 12
2) 7
3) 6
4) 5
The largest cone is formed at the base of a cube of side measuring 7 cm. Find the ratio of volume of cone to cube.

1) 20:21
2) 11:42
3) 21:22