1
UPSC Civil Service Prelims Paper II 2023 (CSAT)
+2.5
-0.833
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 digits occupy even positions?
A
12
B
18
C
36
D
72
2
UPSC Civil Service Prelims Paper II 2023 (CSAT)
+2.5
-0.833
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 using any three points as vertices out of these six points?
A
16
B
18
C
20
D
24
3
UPSC Civil Service Prelims Paper II 2023 (CSAT)
+2.5
-0.833

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. The smallest number n such that any n balls drawn from the box randomly must contain one full group of at least one colour is 175.

2. The smallest number m such that any m balls drawn from the box randomly must contain at least one ball of each colour is 167.

Which of the above statements is/are correct?

A
1 only
B
2 only
C
Both 1 and 2
D
Neither 1 nor 2
4
UPSC Civil Service Prelims Paper II 2023 (CSAT)
+2.5
-0.833
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?
A
7998
B
8028
C
8878
D
9238
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