Find three rational numbers between -2 and 5.
A rational number lying between -2 and 5 is:
Now a rational number between -2 and
is:
Now a rational number lying between 
and 5 is:
∴ 
Hence three rational numbers between -2 and 5 is 
.
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with a rational denominator. 
correct to three places of decimal, it being given that 
= 1.4142. 
