# Permutations and Combinations · Basic Numeracy · UPSC Civil Service

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UPSC Civil Service Prelims Paper II 2023 (CSAT)
In how many ways can a batsman score exactly 25 runs by scoring single runs, fours and sixes only, irrespective of the sequence of scoring shots?
UPSC Civil Service Prelims Paper II 2023 (CSAT)
There are four letters and four envelopes and exactly one letter is to be put in exactly one envelope with the correct address. If the letters are ran...
UPSC Civil Service Prelims Paper II 2023 (CSAT)
How many distinct 8-digit numbers can be formed by rearranging the digits of the number 11223344 such that odd digits occupy odd positions and even di...
UPSC Civil Service Prelims Paper II 2023 (CSAT)
ABCD is a square. One point on each of AB and CD; and two distinct points on each of BC and DA are chosen. How many distinct triangles can be drawn us...
UPSC Civil Service Prelims Paper II 2023 (CSAT)
A box contains 14 black balls, 20 blue balls, 26 green balls, 28 yellow balls, 38 red balls and 54 white balls. Consider the following statements: 1....
UPSC Civil Service Prelims Paper II 2023 (CSAT)
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?
UPSC Civil Service Prelims Paper II 2023 (CSAT)
What is the number of selections of 10 consecutive objects in clockwise direction out of 12 objects arranged in a circle?
UPSC Civil Service Prelims Paper II 2023 (CSAT)
In an examination, the maximum marks for each of the four papers namely P, Q, R and S are 100. Marks scored by the students are in integers. A student...
UPSC Civil Service Prelims Paper II 2023 (CSAT)
A flag has to be designed with 4 horizontal stripes using some or all of the colours red, green and yellow. What is the number of different ways in wh...
UPSC Civil Service Prelims Paper II 2023 (CSAT)
There are five persons P, Q, R, S and T each one of whom has to be assigned one task. Neither P nor Q can be assigned Task-1. Task-2 must be assi...
UPSC Civil Service Prelims Paper II 2023 (CSAT)
The letters of the word "INCOMPREHENSIBILITIES" are arranged alphabetically in reverse order. How many positions of the letter/letters will remain unc...
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