Question

Find the rectangular number between 51and 60

Answer 1

Answer:

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Step-by-step explanation:

We Know that, general Formula of rectangular number is

Rn= n(n+1)

So, R1= 2,R2=6,R3=12,R4=20,R5=30,R6=42,R7=56

and R8=72>60

The rectangular number between 51 and 60 is 56.