Question : How many times do the keys of a typewriter have to be pressed to write numbers from 121 to 1346?

Option 1: 3675

Option 2: 4018

Option 3: 4021

Option 4: 4025

Question : Directions: By interchanging the given two signs and numbers, which of the following equations will be correct?
+ and ×, 1 and 2

Option 1: 8 × 3 – 4 ÷ 2 + 1 = 7

Option 2: 2 × 3 – 8 ÷ 1 + 9 = 18

Option 3: 8 × 3 – 4 ÷ 2 + 1 = 3

Option 4: 2 × 3 – 8 ÷ 1 + 2 = 5

Question : Directions: By Interchanging the given two numbers which of the following equations will be correct?
1 and 9

Option 1: 9 × 3 – 4 ÷ 2 + 1 = 10

Option 2: 1 + 9 × 3 – 4 ÷ 2 = 18

Option 3: 9 × 2 + 1 – 8 ÷ 4 = 12

Option 4: 9 – 1 + 6 ÷ 2 × 3 = 7

Question : Directions: By interchanging the given two signs and numbers which of the following equations will not be correct?
÷ and ×, 1 and 3

Option 1: 6 ÷ 3 – 1 + 4 × 2 = 5

Option 2: 4 × 3 – 1 + 8 ÷ 2 = 9

Option 3: 5 – 8 × 3 + 9 ÷ 1 = 24

Option 4: 6 + 4 – 9 × 3 ÷ 1 = –17

Question : Directions: By Interchanging the given two numbers which of the following equations will be correct?
7 and 3

Option 1: 3 ÷ 1 – 7 × 2 + 4 = 8

Option 2: 3 × 2 + 7 – 6 ÷ 3 = 18

Option 3: 3 + 7 × 4 – 6 ÷ 2 = 20

Option 4: 7 + 3 × 2 – 4 ÷ 1 = 13

Question : Simplify: $2.5 \times[144 \div 198 \times\{121 \times 81 \div(11 \times 9)\}]$

Option 1: 180

Option 2: 175

Option 3: 185

Option 4: 190