CUET-General Aptitude-11/05/2025
Dear Students, we welcome you in our post CUET-General Aptitude-11/05/2025.
In all previous years’ exams, there is at least one question on ‘identities’.
Today’s CUET-General Aptitude-11/05/2025 post will demonstrate how to solve questions based on identities:
Q 3733) The value of 104² is
(A) 10861 (B) 10816 (C) 10860 (D) 10806
Ans: (B) 10816
Hint: Use the identity (a+b)² = a²+2ab+b²
(104)² = (100+4)²
100² + 2x100x4 +4² = 10816
Q 3734) The value of (2b²+9) (2b²+5) is —
(A) 4b4 +28b² + 45 (B) 4b²+28b²+45 (C) 4b+28b+45 (D) 4b+28b²+45
Ans: 4b4 +28b² + 45
Hint: Use the identity (x+a) (x+b) = x²+(a+b)x +ab
Q 3735) The value of 12.1² – 7.9² is
(A) 79 (B) 81 (C) 83 (D) 84
Ans: (D) 84
Hint: Use the identity a²- b² = (a + b) (a – b)
Q 3736) The value of (1.02)² – (0.98)² is
(A) 0.08 (B) 0.80 (C) 2.00 (D) 1.04
Ans: (A) 0.08
Hint: Use the identity a²- b² = (a + b) (a – b)
Q 3737) The value of (4.9)² is
(A) 24.01 (B) 24.10 (C) 24.09 (D) 24.001
Ans: (A) 24.01
Hint: Use the identity (a-b)² = a²-2ab+b²
(4.9)² = (5.0 – 0.1)² = (5.0)² – 2×5.0x 0.1 + (0.1)²
= 25.00 -1.00 + 0.01
Q 3738) The value of 5a(-4ayz) is?
(A) 20a3 (B) 27.04 (C) -15ab (D) -20a²yz
Ans: (D) -20a²yz
Q 3739) The value of 5a x 4a² is?
(A) 20a3 (B) 27.04 (C) -15ab (D) -20a²yz
Ans: (A) 20a3
Q 3740) The value of 5.2² is?
(A) 20a3 (B) 27.04 (C) -15ab (D) -20a²yz
Ans: (B) 27.04
Q 3741) The value of 5a x (-3b) is?
(A) 20a3 (B) 27.04 (C) -15ab (D) -20a²yz
Ans: (C) -15ab
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General Aptitude
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