A person have some one rupee, 50 paise and 25 paise coins totalling Rs 210 in the ratio 5 : 6 : 8, then number of one rupee coin is
41
42
103
105
Which of the following is not a 'proposition ?
Sum of 2 and 5 is 7
An angle consists' of two rays and one vertex
Is 7 the sum of 2 and 5 ?
Sum of 2 and 5 is 6
Which of the following is a perfect number ?
28
36
10
All of these
A.
28
In number theory, a perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is the sum of its positive divisors excluding the number itself, so from the option, only 28 is the perfect number. i.e. 28 = 1 + 2 + 4 + 7 + 14
If the sum of five successive integers are S, then the value of largest integer in terms of S will be
Read the following question from class VI textbook. "Write a pair of integers whose sum gives a negative integer."
The above question refers to
Reflective question
Closed ended question
Multi-disciplinary question
Open ended question
The additive inverse of S, where
S = 1 - 2 + 3 - 4 + 5 - 6 + 7 - 8 + ... + 49 - 50, is
- 25
1
0
25