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Sets and Relations question

2024 · 1 Feb · Shift 1 · Q60

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PYQ Library
JEE Main
Mathematics
Sets and Relations
2024 · 1 Feb · Shift 1 · Q60

Sets and Relations question

2024 · 1 Feb · Shift 1 · Q60

JEE MainMathematicsSets and RelationsNumerical+4 / −1

Let

A=\{1,2,3, \ldots, 20\}

. Let

R_1

and

R_2

two relation on

A

such that

R_1=\{(a, b): b

is divisible by

a\}R_2=\{(a, b): a

is an integral multiple of

b\}

. Then, number of elements in

R_1-R_2

is equal to

\underline{\hspace{2cm}}

.

Numerical answer

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