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Which number is a ration number when multiplied by 0.25?

A. 0.45
B. -squard root of 15
C. Pie
D. 0.53713218

User Steve Wall
by
8.6k points

1 Answer

3 votes

A,D

Explanation:

A rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q.

Product of two rational numbers is always rational.

Product of two irrational numbers may or may not be rational.

Product of a rational number and a irrational number is rational if the rational number is zero.

option A:

Both
0.25 and
0.45 are rational,So their product is also rational.

option B:


0.25 is irrational but
-√(15) is irrational,So their product is also irrational.

option C:


0.25 is irrational but
\pi is irrational,So their product is also irrational.

option D:

Both
0.25 and
0.53713218 are rational,So their product is also rational.

User Sarsaparilla
by
7.6k points

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