write the first 10 rectangular numbers.
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The numbers that can be arranged to form a rectangle are called Rectangular Numbers (also known as Pronic numbers). The first few rectangular numbers are: 0, 2, 6, 12, 20, 30, 42, 56, 72, 90, 110, 132, 156, 182, 210, 240, 272, 306, 342, 380, 420, 462 . . . . . . Given a number n, find n-th rectangular number.
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FIRST 10 RECTANGULAR NUMBERS ARE
0, 2, 6, 12, 20, 30, 42, 56, 72, 90, etc.
By using Rn=n(n+1) (or) Rn=n^2+n
Ex: Rn=2(2+1) (or) Rn=2^2+2
Rn=6. Rn=6
Ex:Rn=3(3+1) (or) Rn= 3^2+3
Rn=12. Rn=12
Like this you can the all values.
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