Maths Number System
The unit digit in the sum of (124)³⁷² + (124)³⁷³ is:
(124)³⁷² + (124)³⁷³ के योग में इकाई अंक है:
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A
(a) 5
B
(b) 4
C
(c) 20
D
(d) 0
Correct Answer: Option D
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Explanation / व्याख्या:
(124)³⁷²[1+124] = (124)³⁷² × 125. Unit digit of 4ᵉᵛᵉⁿ=6. 6×5=30 → unit digit=0.
(124)³⁷² × 125। 4^सम = 6। 6×5=30 → इकाई=0।
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