Govt Exams
The standard platform height on Indian railways is 750 mm above rail level.
Rajdhani Express was the first premium service introduced by Indian Railways.
South Eastern Railway covers the maximum geographical area among all railway zones.
Interest in 2 years = A₂ - A₄/2 = 1800 - 1050 = 750; Interest per year = 375; Principal = 1800 - 750 = 1500
Work rate = 1/12 + 1/15 = 5/60 + 4/60 = 9/60 = 3/20; Time = 20/3 ≈ 6.67 hours
After 10% discount: 90%; After 15% on 90%: 90% × 85% = 76.5%; Overall discount = 23.5%
x² - 5x + 6 = (x-2)(x-3) = 0; x = 2 or x = 3
Time by train = 1.5 h; Time by bus = 1 h; Total distance = 90 km; Total time = 2.5 h; Average = 90/2.5 = 36 km/h
Using the formula F = (9/5)C + 32, when C = F, we get C = (9/5)C + 32, solving gives C = -40°
Light and electrons exhibit wave-particle duality, meaning they behave as both waves and particles depending on the experiment.