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RRB NTPC Graduate Tier 1 2025 Shift-3 📅 05 Jun, 2025

Which of the following numbers is divisible by 7?

A
894
B
87
C
875
D
687
Result Summary
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APEDIA

RRB NTPC Graduate Tier 1
2025 • 05 Jun, 2025 • Shift-3
Which of the following numbers is divisible by 7?
Correct Answer
875
[Divisibility Testing]: To determine divisibility by 7, one can either apply the standard division algorithm or use the divisibility rule (double the last digit......
💡 Analysis & Explanation
Introduction
[Divisibility Testing]
To determine divisibility by 7, one can either apply the standard division algorithm or use the divisibility rule (double the last digit and subtract from the rest).
[Option Analysis]
Option A
894 / 7 = 127 with a remainder of 5.
Option B
87 / 7 = 12 with a remainder of 3.
Option D
687 / 7 = 98 with a remainder of 1.
[Verification of Correct Option]
For 875, dividing directly: 875 / 7 = 125 exactly. Alternatively, using the rule: 87 - (5 × 2) = 87 - 10 = 77, and since 77 is perfectly divisible by 7, the original number is too.
Conclusion
875 is the only number fully divisible by 7.