# NCO- Cyber Olympiad (SOF) Class 10: Questions 86 - 89 of 461

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## Question 86

### Question

MCQ▾

In a regiment the ratio of the number of officers to the number of soldiers was 3: 31 before battle. In the battle 6 officers and 22 soldiers were killed. The ratio between the number of officers and the number of soldiers now is 1: 13. Find the number of officers and soldiers in the regiment, before the battle.

### Choices

Choice (4)Response

a.

217

b.

216

c.

215

d.

None of the above

## Question 87

### Question

MCQ▾

Find an even number with 3 digits such that all the digits are different and add up to 18. The difference between the first two digits equals the difference between the last two digits. The hundreds digit is less than the sum of the tens and ones digits.

### Choices

Choice (4)Response

a.

873

b.

954

c.

860

d.

864

## Question 88

### Question

MCQ▾

Shown below are six dices. The upper part of each dice is erased. The sum of dots on the front-back and top-bottom faces is 7.

If the dice I, II and III have odd number of dots on their upper faces, then what would be the total number of dots?

### Choices

Choice (4)Response

a.

15

b.

11

c.

13

d.

9

## Question 89

### Question

MCQ▾

If all the numbers from 1 to 50 which are divisible by 5 are arranged in descending order, then which number will be at 7th and 4th places?

### Choices

Choice (4)Response

a.

40,10

b.

20,35

c.

35,20

d.

45,25