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How many 5-digits telephone numbers can ...

How many 5-digits telephone numbers can be formed with the digits 0,1,2,….,8,9 if each numbers starts with 35 and no digit appears more than once?

A

Strictly increasing digits

B

Strictly increasing or decreasing digits

C

Increasing digits

D

Increasing or decreasing digits

Text Solution

Verified by Experts

(i) 252, (ii) 512, (iii) 2002, (iv) 3994
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