Real Numbers Test
Real Numbers
This is Real Numbers Test-01 for CBSE class 10 Maths.. There are 15 questions in this test with each question having around four answer choices.
Questions & Answers
1
A number when divided by 61 gives 27 as quotient and 32 as remainder, then the number is:
- A1796
- B1679Correct
- C1569
- D1967
2
Every positive even integer is of the form ____ for some integer ‘q’.
- A2q – 1
- Bnone of these
- C2qCorrect
- D2q + 1
3
Every positive odd integer is of the form ________ where ‘q’ is some integer.
- A2q + 1Correct
- B3q + 1
- C5q + 1
- D2q + 2
4
For any two positive integers a and b, there exist (unique) whole numbers q and r such that
- A\( a{\text{ }} = {\text{ }}bq{\text{ }} + {\text{ }}r, 0 \leqslant r < b. \)Correct
- B\( q{\text{ }} = {\text{ }}ar{\text{ }} + {\text{ }}b \) , \( 0 \leqslant r < b. \).
- Cnone of these
- D$b{\text{ }} = {\text{ }}aq{\text{ }} + {\text{ }}r$ , $0 \leqslant r < b.$
5
For any positive integer ‘a’ and 3, there exist unique integers ‘q’ and ‘r’ such that a = 3q + r where ‘r’ must satisfy
- A0 < r < 3
- B\(0 \leqslant r{\text{ }} < {\text{ }}3\)Correct
- C\(0 < r{\text{ }} \leqslant {\text{ }}3\)
- D1 < r < 3
6
If \(112 = q \times 6 + r,\) then the possible values of r are:
- A2, 3, 5
- B0, 1, 2, 3
- C0, 1, 2, 3, 4, 5Correct
- D1, 2, 3, 4
7
By Euclid’ division lemma \(x = qy + r,x > y,\) the value of \(q\) and \(r\) for \(x = 27\) and \(y = 5\) are:
- A\(q = 5,r = 3\)
- B\(q = 5,r = 2\)Correct
- Ccannot be determined
- D\(q = 6,r = 3\)
8
Every positive odd integer is of the form 2q + 1, where ‘q’ is some
- Anone of these
- Bwhole number
- Cnatural number
- DintegerCorrect
9
Any ____________ is of the form 4q + 1 or 4q + 3 for some integer ‘q’.
- Apositive even integer
- Bcomposite number
- Cprime number
- Dpositive odd integerCorrect
10
The product of three consecutive positive integers is divisible by
- A4
- B5
- C6Correct
- D10
11
The least number \(n\) so that \({5^n}\) is divisible by 3, where \(n\) is:
- Aa whole number
- Ba natural number
- Ca real number
- Dno natural numberCorrect
12
For every positive integer ‘n’, \({n^2} - n\) is divisible by
- A6
- B2Correct
- C4
- D8
13
For every natural number ‘n’, \({6^n}\) always ends with the digit
- A6Correct
- B0
- C8
- D4
14
If \({m^2}--{\text{ }}1\) is divisible by 8, then ‘m’ is
- Aa whole number
- Ban even integer
- Can odd integerCorrect
- Da natural number
15
If two positive integers ‘m’ and ‘n’ can be expressed as \(m = {x^2}{y^5}\) and \(n = {x^3}{y^2}\),where ‘x’ and ‘y’ are prime numbers, then HCF(m, n) =
- A\({x^2}{y^3}\)
- B\({x^3}{y^2}\)
- C\({x^3}{y^3}\)
- D\({x^2}{y^2}\)Correct