Number Theory MCQs deal with GCD Of (76,8) Is, If A≡B And C≡D With (Mod M) Then, Congruent Classes Of Modulo M Is, In CRS Any Two Elements Of Set A Arefor (Mod M), In Number Theory We Study About The Extension Of Integers, Convert 〖(223)〗_10 Into Base 5, Common Divisors Of (-2,-4) Are, GCD Of 4 And 8 Is , If C/Ab And (C,A)=1 Then, If (B,C)=1 And A/C Then, If (A,B)=D Then (Ma,Mb)=, If (B,C)=1 Then (A,Bc)=, If (A,B)=1 Then (A,Bc)=, GCD Of (20, 105, 990) Is, If (A,B)=D Then, Linear Diophantine Equation Has An Integral Solution Iff, In Linear Diophantine Equation, The Solution X_0,Y_0 Are, If Ab≡C And B≡D With (Mod M) Then , Each Congruent Class Of Modulo 5 Is To Each Other, Find Remainder When 3^21 Is Divided By 8:

# Number Theory MCQs

## Each Congruent class of modulo 5 is to each other.

A. Same

B. Different

C. Equal

D. None

**View Answer**

**B. Different**

## If ab≡c and b≡d with (mod m) then.

A. ad≡c

B. ab≡d

C. ad≡c

D. None

**View Answer**

**C. ad≡c**

## If a and b have same remainder after division by m then for (mod m).

A. a and b are congruent

B. a and b are incongruent

C. a and b are equal

D. None

**View Answer**

**A. a and b are congruent**

## In Linear Diophantine Equation, the solution x_0,y_0 are.

A. General Solutions

B. Integral Solutions

C. Specific Solutions

D. None

**View Answer**

**C. Specific Solutions**

## Linear Diophantine Equation has an integral solution iff.

A. (a,b)/c

B. (a,b)/d

C. (a,b)/t

D. None

**View Answer**

**A. (a,b)/c**

## Is LCM of any two numbers is unique.

A. Yes

B. No

C. May or may not

**View Answer**

**A. Yes**

## If (a,b)=d then.

A. (a/d,b/d)=d

B. (a/d,b/d)=1

C. Both A & B

D. None

**View Answer**

**B. (a/d,b/d)=1**

## GCD of (20, 105, 990) is.

A. 5

B. 15

C. Both A & B

D. None

**View Answer**

**A. 5**