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7 grade maths

Change these numbers into special numbers(i) 28 (ii) 132

Profile image of Aniket Singh
1 Year agoGrade
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1 Answer

Profile image of Askiitians Tutor Team
1 Year ago

Special numbers can refer to various mathematical concepts or sequences, so it would be helpful to clarify which specific type of special numbers you are interested in. Here are two possibilities:

(i) 28 as a Perfect Number:
A perfect number is a positive integer that is equal to the sum of its proper divisors (excluding itself). The smallest perfect number is 6, and it can be expressed as 1 + 2 + 3 = 6. To make 28 a special number, you can express it as a sum of its proper divisors:

28 = 1 + 2 + 4 + 7 + 14

So, you can say that 28 is a special number because it is the sum of its proper divisors.

(ii) 132 as a Palindromic Number:
A palindromic number is a number that reads the same forwards and backward. To make 132 a special number, you can reverse its digits to form a palindromic number:

132 → 231

Now, 231 is a palindromic number, and you can consider 132 special in this context.

If you have a different definition or concept in mind for "special numbers," please provide more details so I can assist you accordingly.