Question

please need ans as soon as possible

Answer 1

Answer:

2401, 840

Make 4 letter words.

There are 7 letters.

(i) letters can be repeated

7 × 7 × 7 × 7 = 7⁴ = 2401

There are 7⁴ or 2401 words.

(ii) letters cannot be repeated

7 × (7-1) × (7-2) × (7-3) = 840

There are 840 words.

Answer 2

Answer:

hiii mate

(1). Repetition . allow

7 × 7. × 7 =. 343

(2) Repetition. not allowed

7 × 6 × 5 =. 210

i think that helps u thanks

mark it's brainliest and please follow me