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Science Sparkle Latest Questions
a) 10 hours b) 9 hours c) 6 hours d) 5 hours correct answer is : c) 6 hours Answer Let, the train own speed = x km/hrAccording to the question,In 15 hours, the train reached a place at ...
a) at 10 o’clock & 5:30 o’clock b) at 7 o’clock & 12:30 o’clock c) at 6 o’clock & 10:30 o’clock d) at 12 o’clock & 7:30 o’clock correct answer is : d) at 12 o’clock & ...
a) 1 km/ hour b) 2 km/ hour c) 3 km/ hour d) 4 km/ hour correct answer is : d) 4 km/ hour Explanation According the question,B’s speed 8 km/hour.Here, B overtakes A in 15 minutes or ...
Explanation In this factorization formula used: (a + b)2 = (a2 + 2.a.b + b2) & (a – b)2 = (a2 – 2.a.b + b2) 4x2 – 4xy – 9y2 + y2 + 6yz – z2 {(4x2 – ...
Explanation In this factorization formula used: (a + b)2 = (a2 + 2.a.b + b2) & (a – b)2 = (a2 – 2.a.b + b2) (p2 – q2) (x2 – s2) + 4pqxs {p2(x2 – s2) – ...
a) 8 km b) 10 km c) 12 km d) 15 km correct answer is : b) 10 km Explanation Let, the distance between two place is ‘d’ km.And the time taken by him is ‘t’ hour.In 1st ...