We know that
<span>1. The number of all 4-letter words written using the alphabet of 20 symbols (from A to T) is
20</span><span>^4=160,000
</span><span>
2. The number of all 4-letter words written using the alphabet of 19 symbols (from B to T) is
19</span><span>^4=130,321
</span><span>
3. The difference represents exactly the number of all words of the inhabitants of the island of Jumble
difference=</span>(160,000-130,321)= 29679.
the answer is
29679
Answer: someone please answer :(((
Step-by-step explanation:
U have posted 6 & 7 instead so let me answer them instead ..as for 6 you must use Pythagoras theorem ..
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Lib _ _ _ P. So u can see they form a right angled triangle. by pythagoras ,answer would be 4 .
Similarly draw a rough diagram for 2nd one u will get the answer as √495 foot ..
