Question

Somebody please help in solving this question number 11

Answer 1

Answer:

24

Step-by-step explanation:

There are 4 digits and each digit can be repeated only once....

so we be total for places

___×___×____×____ .

• first box can be filled with 4 possible ways
• Second box can be filled with 3 possible ways ( as we used one digit to fill one box )
• Third box can be filled with 2 possible ways
• last digit has only one possible ways...

Now by multiplying 4×3×2×1 = 24 ways

( Logic used Permutations)

Answer 2

Answer:

4

Step-by-step explanation:

if n= 1

2×1>1!

2<1 is false

for n= 2

2×2< 2!

4<2. is false

for n=3

we get

6<6. false

for n = 4

we ge t

8<24. true

for all abbe 5 will be true