Spot the doggy integer

Number Theory Level 1

How many of the following 10 numbers are integers?

0 , 1 , − 1 , 1 2 , 2 1 , 3 2 , 2 3 , 2 × 3 , 2 × 1 2 , 3 × 1 2 . \begin{array} {rrrrr} 0, &1, &-1, &\frac{1}{2} , &\frac{2}{1}, \\ \frac{3}{2}, &\frac{2}{3} , &2 \times 3, &2 \times \frac{1}{2}, &3 \times \frac{1}{2}. \end{array}


The answer is 6.

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Arron Kau by Arron Kau

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8 solutions

Zarif Hosain
Oct 28, 2013

integer are numbers which are not decimals, thus on account of this we get to know that 0,1,2 x 3, 2 X 1/2,-1,2/1 are all integers

3 Helpful 0 Interesting 0 Brilliant 0 Confused

can you give a brief explanation for this sum .

sonu sekar - 7 years, 7 months ago

thats ok

Oshanto Zabir - 7 years, 7 months ago
Raja Fakirchandra
Oct 31, 2013

Integers= 0,1,-1,2/1,2x3,2x1/2

They are 6

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Mohammad Fiyaz
Feb 18, 2014

An integer is a number that include positive number, negative number and zero except fractional or decimal number

here (0, 1, -1, 2/1, 2 3, 2 1/2 ) = total 6 numbers are integers.

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Sai Krishna
Nov 2, 2013

0,1,-1,2,2*3=6,2

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Amna Rajput
Nov 2, 2013

As we know that integers are group of numbers which include positve numbers,negative and zero,without fractions,so the answer is 6

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John White
Nov 2, 2013

integer is any number without fraction or decimal point. get the final answer of top ques, see their products if there is any of those frac and dec. * negative no. still counted integer

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Ilham Adiyaksa
Oct 30, 2013

the integer : 0, 1 , -1, 2/1, 2x3, 2x1/2

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Cee Jhay Castro
Oct 29, 2013

Only six above are integers because others are fraction such as 3/2, 2/3, 3 x 1/2 and 1/2.

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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