A person covers 60% of a journey by train, 30% by bus, and the remaining distance of 20 km by walk. What is the total distance?
Train + Bus = 60% + 30% = 90%. Walk = 10% = 20 km. Total = 020.10 = 200 km
A box contains 3 red balls, 4 blue balls, and 5 green balls. What is the probability of drawing a red ball?
Total balls = 3 + 4 + 5 = 12. P(red) = 123 = 41
If the cost price is Rs. 500 and profit percentage is 25%, what is the profit amount?
Profit = 25% of 500 = 0.25 × 500 = 125
Three numbers are in the ratio 2:3:5. If their sum is 100, what is the largest number?
Let numbers be 2x, 3x, 5x. Sum = 2x + 3x + 5x = 10x = 100. x = 10. Largest = 5x = 50
A worker can complete a task in 10 days. How much work will be done in 3 days?
Work done per day = 101 = 10%. In 3 days = 3 × 10% = 30%
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If a < b and b < c, which of the following is true?
By transitivity, if a < b and b < c, then a < c
A number when divided by 12 leaves remainder 5. What is the remainder when the number is divided by 4?
Number = 12k + 5. When divided by 4: 12k + 5 = 4(3k) + 4 + 1 = 4(3k+1) + 1. Remainder = 1
If 5 workers can build a wall in 12 days, how many days will 10 workers take?
Work is inversely proportional to number of workers. (5 × 12) = (10 × x), so x = 6 days
The average of five numbers is 30. What is their sum?
Sum = Average × Count = 30 × 5 = 150
Find the missing number in the series: 2, 4, 8, 16, ?, 64
Each number is double the previous: 2, 4, 8, 16, 32, 64. Pattern is multiplication by 2
If a person buys 10 items at Rs. 50 each and sells them at Rs. 60 each, what is the profit percentage?
Cost Price = 10 × 50 = 500. Selling Price = 10 × 60 = 600. Profit = 100. Profit% = (500100) × 100 = 20%
Complete the analogy: Dog : Bark :: Cat : ?
A dog barks, similarly a cat meows. This is a sound association analogy
If all roses are flowers and some flowers are red, then which statement is true?
Roses are a subset of flowers, but we don't know which flowers are red. Some red flowers might not be roses.
Find the odd one out: 12, 24, 36, 48, 58
12, 24, 36, 48 are all multiples of 12. 58 is not a multiple of 12
If ROSE is coded as 4567, then PETAL is coded as?
R=4, O=5, S=6, E=7. Following alphabet position: P=1(9), E=7(8), T=2(9→2 with shift), A=1, L=4. PETAL = 89214
Select the word that is most similar in meaning to 'Benign':
Benign means harmless, kind, or gentle. Friendly is the closest synonym
Antonym of 'Verbose' is:
Verbose means using more words than necessary. Concise is its opposite—using few words
Which data structure uses LIFO (Last In First Out)?
Stack follows LIFO principle. Queue follows FIFO. Array and Tree are not strictly LIFO/FIFO structures
In OOP, what is inheritance?
Inheritance allows a class to inherit properties and methods from another class (parent/base class)
Which sorting algorithm has the best average case time complexity?
Quick Sort has O(n log n) average case complexity, which is optimal among comparison-based sorts
