Manav starts from a place A and reaches the place B in 29 hours. He travels 2/9 distance at the speed of 9 km/hr and the remaining distance at the speed of 12 km/hr. What is the distance between A and B? a) 376 kmb) 208 kmc) 324 kmd) 264 km Ans : c) 324 […]
A man buys 15 mangoes for a rupee. How many mangoes had he sold for a rupee so that there is a loss of 25 percent? a) 20b) 17c) 28d) 38 Answer : a) 20 SSC Constable GD Exam – Elementary Mathematics Solution We need to find the selling price that results in a 25% loss. So,
Three numbers are in the ratio 11:13:15. If the difference between thrice the third number and the sum of first and second number is 441. Find the difference between the smallest and largest number? तीन संख्याएँ 11:13:15 के अनुपात में हैं। यदि तीसरी संख्या के तीन गुना और पहली और दूसरी संख्या के योगफल के
A train takes 62 seconds to cross a bridge of length 121 m. If the same train takes 51 seconds to cross a man standing on the bridge, find the length of the train.(In m) एक रेलगाड़ी 121 मीटर लंबे पुल को पार करने में 62 सेकंड का समय लेती है। यदि वही रेलगाड़ी पुल
A boat goes 140 km upstream in 28 hours and a distance of 203 km downstream in 29 hours. Find the speed of the boat in still water. (In kmph) एक नाव धारा की विपरीत दिशा में 140 किमी की दूरी 28 घंटे में तय करती है और धारा की दिशा में 203 किमी की
Ashok left a will of Rs.48300 for his two sons whose age are 16 and 17 years. They must get equal amounts when they are 19 years at 10% compound interest. Find the present share of the younger son. (In Rs.) अशोक ने अपने दो बेटों के लिए 48300 रुपये की वसीयत छोड़ी है, जिनकी
The length, breadth and height of a room in the shape of a cuboid are increased by 20%, 25% and 30% respectively. Find the percentage change in the volume of the cuboid. घनाभ के आकार के एक कमरे की लंबाई, चौड़ाई और ऊंचाई में क्रमशः 20%, 25% और 30% की वृद्धि की जाती है। घनाभ
A train traveling at 136 km/h completely crosses another train having half its length and traveling in the opposite direction at 44 km/h in 6 s. If it also passes a railway platform in 45 s, then find the length of the platform. (In m) 136 km/h की गति से चलने वाली एक ट्रेन, इससे
If N5921 is divisible by 11, find the value of the smallest natural number N. यदि N5921, 11 से विभाज्य है, तो सबसे छोटी प्राकृतिक संख्या N का मान ज्ञात कीजिए। a) 6b) 9c) 7d) 8 Answer : d) 8 Uttar Pradesh Police SI Exam paper – Mathematics Solution : Divisibility rule for 11. This
If N5921 is divisible by 11, find the value of the smallest natural number N. Read More »
If the average marks of three classes of 55, 60 and 65 students are 55,60, 65 respectively, find the average marks of all the students. (In approximately) यदि 55, 60 और 65 छात्रों वाली तीन कक्षाओं के औसत अंक क्रमशः 55,60, 65 हैं, तो सभी छात्रों के औसत अंक ज्ञात कीजिए। (लगभग) a) 62.277b) 66.277c)