₦airaland Forum

smurfy: Master Calculus has already got 60 for all possible 4-digit numbers, so I'll skip that.

Here goes...

5-DIGIT NUMBERS
Now we need to proceed with caution because of that 0 digit. There are three scenarios to consider:
(a) ends with 0
(b) ends with 2
(c) ends with 4

(A) Ends with Zero:
Possible combination is 5 * 4 * 3 * 2 * 1 = 120

(B) Ends with Two
Possible combination is 4 * 4 * 3 * 2 * 1 = 96

(C) Ends with Four
Possible combination is 4 * 4 * 3 * 2 * 1 = 96

Add these three scenarios to get 312 possible 5-digit numbers.

6-DIGIT NUMBERS
Same three scenarios.

The three combinations (following the same order as above) are:

5*4*3*2*1*1 = 120 (ends with zero),
4*4*3*2*1*1 = 96 (ends with two) and
4*4*3*2*1*1 = 96 (ends with four). This also gives 312.

So the number of ways of forming even numbers greater than 4000 from digits 0 through 5 is 60 + 312 + 312 = 684.

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smurfy: This answer is wrong. You gave 0.02m in your question but did not convert it to 2cm in the working. Please check. The correct answer is 5627 bullets.

busuyem: 15000 bullets

echibuzor: .
The set of people we are concerned with are the Lunchers => U = 50
D for Dodo R for Rice and B for Beans

D & R only = 6
B only = 22
B, R & D = 3
B & R only = 5
B & D only = 7 - 3 = 4 (i.e minus those that ate the Holy Trinity )
D only = R only = x

50 = x + 6 + x + 4 + 5 + 22 + 3
x = 5

(1) Those who Rice anyhow = 5 + 6 + 3 + 5 = 19 students (As you must have noticed, this answer is diff from my initial post Too much AKPU dey worry eye, This one is correct though, as far as I can see )
(2) Dodo People = 5 + 6 + 3 + 4 = 18 students.

echibuzor: .
(1) Rice as food = 16
(2) Dodo as food = 18

benbuks: Wot's d diff btw -1^2
and (-1)^2 nd why....
Dis nt part of d quiz quiz questions...just answer if u cn...4mins.

aysuccess99: my chairman, i beg easy o, ur choice of qstns are damn hard,#biko,ogini,please,ejo#....am begging o...easy does things.

factorial1: How many question has the ROUND 3?

factorial1: How many question has the ROUND 3?