Question

X | x is an odd natural number less than 5​}

Answer 1

S=sum of odd natural numbers less than 50

=1+3+5+......+49

=(2(1)−1)+(2(2)−1)+....+(2(25)−1)

=2(1+2+....+25)−25

=25(25+1)−25

S=625

Answer 2

Answer:

it could be 1 , 2 , 3 , 4 as there are only these numbers smaller than five