Match List I with List II
| LIST I | LIST II | ||
| A. | \(3^3 \equiv b \pmod{9}\) | I. | 4 |
| B. | \(2^5 \equiv b \pmod{15}\) | II. | 0 |
| C. | \(4^3 \equiv b \pmod{10}\) | III. | 2 |
| D. | \(5^3 \equiv b \pmod{12}\) | IV. | 5 |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A - II, B - III, C - I, D - IV
Here b is the remainder when the power is divided by the modulus.
(A) \(3^3 \equiv b \pmod{9}\)
This matches (II) 0.
\(3^3 = 27 = 9 \times 3 + 0\)
(B) \(2^5 \equiv b \pmod{15}\)
This matches (III) 2.
\(2^5 = 32 = 15 \times 2 + 2\)
(C) \(4^3 \equiv b \pmod{10}\)
This matches (I) 4.
\(4^3 = 64 = 10 \times 6 + 4\)
(D) \(5^3 \equiv b \pmod{12}\)
This matches (IV) 5.
\(5^3 = 125 = 12 \times 10 + 5\)
So the matching is A - II, B - III, C - I, D - IV.