What is the multiplicative inverse of 7 modulo 10?
- 3
- 4
- 5
- None of these
Explanation
A multiplicative inverse of 7 modulo 10 satisfies 7x ≡ 1 (mod 10).
7 × 3 = 21.
Since 21 leaves remainder 1 when divided by 10, the inverse is 3.
Last verified on 14-11-2026
Related MCQs
- xₙ₊₁ = g'(xₙ)
- xₙ₊₁ = g(xₙ)
- xₙ₊₁ = xₙ²
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- Simpson's Rule
- Gaussian Elimination
- Bisection Method
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- The set of all bounded linear functionals on X
- The set of all matrices in X
- The set of all nonlinear functions on X
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- Its terms must be positive.
- Its terms must become arbitrarily close to one another.
- Its terms must be increasing.
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 3
- 4
- 5
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
