Question

Noofno's greater than 1000 but less than 4000 is formed using the digits 0,2,3,4 repition is allowed.
Ans: 128 ??

Answer 1

Answer:

Let number of digits formed x.

1000 < x < 4000, which means left extreme digit will be either 2 or 3.

Required numbers = 2C1 × HTU

where H = Hundred's place, T =  Ten’s place, and U = Unit's place

= 2C1 x 4 x 4 x 4 = 128

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Answer 2

Step-by-step explanation:

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