UPSC PRELIMS 2023 CSAT PAPER-2 (28-May-2023)
Q.(21-40) SET-A, SHORT TRICK SOLUTIONS FOR UPSC PREMLIMS 2023 CSAT PAPER-2 HELD ON 28-MAY-2023, MATHS AND REASONING #upsc #upsc2023 #upsc2023answerkey #csat #quantwalemanusir
24. 7⊕9⊕10 =8, 9⊕11⊕30 =5, 11⊕17⊕21 =13, what is the value of 23⊕4⊕15?
a) 6
b) 8
c) 13
d) 15
25. Let x be a positive integer such that 7x+96 is divisible by x. How many values of x are possible?
a) 10
b) 11
c) 12
d) Infinitely many
26. If p, q, r and s are distinct single digit positive numbers, then what is the greatest value of (p+q)(r+s) ?
a) 230
b) 225
c) 224
d) 221
27. A number N is formed by writing 9 for 99 times. What is the remainder if N is divided by 13?
a) 11
b) 9
c) 7
d) 1
28. Each digit of a 9-digit number is 1. It is multiplied by itself. What is the sum of the digits of the resulting number?
a) 64
b) 80
c) 81
d) 100
What is the sum of all the digits which appear in all the integers from 10 to 100?
a) 855
b) 856
c) 910
d) 911
30) 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
36) 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
37) If 'ZERO' is written as 'CHUR', then how is ‘PLAYER' written?
a) SOCAGT
b) SODBGT
c) SODBHT
d) SODBHU
38) Consider the following statements:
A is older than B.
C and D are of the same age.
E is the youngest.
F is younger than D.
F is older than A.
How many statements given above are required to person/persons determine the oldest?
a) Only two
b) Only three
c) Only four
d) All five
39) Consider the following including the Question and the Statements:
Question: What is the relation of E to B?
There are 5 members A, B, C, D, E in a family.
Statement-1: A and B are a married couple. Statement-2: D is the father of C.
Statement-3: E is D' s son. Statement-4: A and C are sisters.
Which one of the following is correct in respect of the above Question and Statements?
a) Statement-2andStatement-1,Statement-3 are sufficient to answer the Question.
b) Statement-1,Statement-3andStatement-4 are sufficient to answer the Question.
c) All four statements together sufficient to answer the Question.
d) All four statements are not sufficient to answer the Question.
40) Choose the group which is different from the others:
a) 17, 37, 47, 97
b) 31, 41, 53, 67
c) 71, 73, 79, 83
d) 83, 89, 91, 97
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