Who among the following is the author of the book ‘On

1300% of 2341 + 1200% of 6321 = ?

What will come in the place of question mark (?) in the given expression?

30% of 50% of 1200 = 18/11 × ?

1550 ÷ 62 + 54.6 x 36 = (? x 10) + (28.5 x 40)           

What is the value of 7/9-11/12+12/16-1/8?

12 × 6 + 24 – 36 of 5 + 160 = ?

³ √8 × √36 × 13 = ? × √169

125% of 129 ÷ 43 × 28 ÷ 7 = ? ÷ √16

? ÷ [35% of 379 - 34(4/5)] = 0.4

3/7 Of 504 ÷ 12 + 17 = √?

What will come in the place of question mark (?) in the given expression?

? = 90% of 25% of (40 × 200) + 300