JEE Main 2023 (Online) 15th April Morning Shift | Permutations and Combinations Question 23 | Mathematics

A person forgets his 4-digit ATM pin code. But he remembers that in the code all the digits are different, the greatest digit is 7 and the sum of the first two digits is equal to the sum of the last two digits. Then the maximum number of trials necessary to obtain the correct code is ___________.

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JEE Main 2023 (Online) 13th April Evening Shift

Numerical

-1

Total numbers of 3-digit numbers that are divisible by 6 and can be formed by using the digits $$1,2,3,4,5$$ with repetition, is _________.

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JEE Main 2023 (Online) 13th April Morning Shift

Numerical

-1

The number of seven digit positive integers formed using the digits $$1,2,3$$ and $$4$$ only and sum of the digits equal to $$12$$ is ___________.

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JEE Main 2023 (Online) 12th April Morning Shift

Numerical

-1

Let the digits a, b, c be in A. P. Nine-digit numbers are to be formed using each of these three digits thrice such that three consecutive digits are in A.P. at least once. How many such numbers can be formed?

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