Question

33.
1 - 2 + 3° - 4 + ....... + 93 =
(a) 425
(b) – 425
(c) 475
(d) - 475​

Answer 1

Answer:

$\red {1-2+3-4+....+93}\green { = 47}$

Step-by-step explanation:

$\red {1-2+3-4+....+93}$

$= (1-2)+(3-4)+...+(91-92)+93\\=(-1)+(-1)+...+46 times + 93\\= -46 + 93 = 47$

Therefore.,

$\red {1-2+3-4+....+93}\green { = 47}$

•••♪