QUESTION

CSAT

Easy

Maths

Prelims 2023

What is the sum of all 4-digit numbers less than 2000 formed by the digits 1, 2, 3 and 4, where none of the digits is repeated?

Select an option to attempt

Explanation

4-digit numbers less than 2000 formed by the digits 1, 2, 3 and 4, where none of the digits is repeated are: 1234, 1243, 1324, 1342, 1423, 1432

Required sum = $1234 + 1243 + 1324 + 1342 + 1423 + 1432 = 7998$

Hence, option (A) is correct.

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