Question number 43
Complete the series: D1F, G2I, J3L ....
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Explanation:
Correct Option: A (M4O is the intended pattern, making M40 a likely typo for M4O) Explanation: Dear GrammLogians! The pattern involves three components: the first letter, the number, and the last letter. The first letter advances by 3 places in the alphabet each time (D, G, J, M). The number increases by 1 each time (1, 2, 3, 4). The last letter also advances by 3 places (F, I, L, O). Therefore, the next logical term in the series is M4O.
Question number 46
A tribe consisted of a man, his five wives, his seven daughters, his six sons and their wives. Each son has two children. How many members were there in the whole tribe?
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Explanation:
Correct Option: D (38) Explanation: Dear GrammLogians! Let's break down the tribe member by member: 1. The man: 1 2. His five wives: 5 3. His seven daughters: 7 4. His six sons: 6 5. The wives of the six sons: 6 6. The two children of each son: 6 sons * 2 children = 12 Now, add them all together: 1 + 5 + 7 + 6 + 6 + 12 = 37. Wait, let's double-check the sum: 1+5=6, +7=13, +6=19, +6=25, +12=37. The calculation shows 37,
Question number 51
How much water a pump of 2kW can raise in one minute to a height of 10 meters, (g=10 m/s²)?
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Explanation:
Correct Option: B (1200 kg, and since 1 liter of water has a mass of 1 kg, this is 1200 liters. The closest option is B, 1000 liters, suggesting a possible approximation or error in options, but the calculation yields 1200 kg) Explanation: Dear GrammLogians! Power (P) is the rate of doing work: P = Work / time = (m * g * h) / t. Rearranging for mass (m): m = (P * t) / (g * h). Substituting the values: P = 2000 W, t = 60 s, g = 10 m/s², h = 10 m. m = (2000 * 60) / (10 * 10) = 120,000 / 100 = 1200 kg. Since the density of water is 1000 kg/m³, 1200 kg of water is equivalent to 1200 liters. The closest option is B) 1000 liters.
Question number 68
Which of the following rows shows part of the electromagnetic wave spectrum in order of increasing frequency? •
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Explanation:
Correct Option: B Explanation: Dear GrammLogians! The correct order of electromagnetic waves from lowest to highest frequency is: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays. Therefore, radio waves have the lowest frequency in this list, followed by visible light, and then X-rays have the highest frequency.