Aisha wrote the first four whole numbers that are factors of 140. Which list shows these factors ?
(a) 1, 2, 3, 4
(b) 1, 2, 4, 5
(c) 1, 2, 5, 10
(d) 140, 280, 420, 560
Read the following statements.
Statement-1 :A number for which sum of all its factors is equal to twice the number is called perfect number.
Statement-2 :If two numbers are divisible by a number, then their sum and difference are also divisible by that number.
Which of the following options holds?
A Both Statement-1 and Statement-2 are true.
B Statement-1 is true but Statement-2 is false.
C Statement-1 is false but Statement-2 is true.
D Both Statement-1 and Statement-2 are false.
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