Question

Answer 1

=\(\dfrac{1}{1}-\dfrac{1}{4}+\dfrac{1}{4}-\dfrac{1}{7}+\dfrac{1}{7}-\dfrac{1}{10}+....+\dfrac{1}{91}-\dfrac{1}{94}\)

=\(\dfrac{1}{1}-\dfrac{1}{94}\)

=\(\dfrac{93}{94}\)

Answer 2

=1/1−1/4+1/4−1/7+1/7−1/10+....+1/91−1/94

=1/1−1/94

=93/ 94