Answer: D) 17 Explanation: Any two digit number can be written as (10P + Q), where P is the digit in the tens place and Q is the digit in the units place.P + Q = 8 ----- (1)(10Q + P) - (10P + Q) = 549(Q - P) = 54(Q - P) = 6 ----- (2)Solve (1) and (2) P = 1 and Q = 7The required number is = 17

Answer: D) Karnataka Explanation: Southern state Karnataka has been ranked top among the states in the country in terms of manufacturing excellence, according to a study by apex industry body Assocham in 2017.

Answer: B) Medha Explanation: Railway Minister Suresh Prabhu on 18th March, 2017 flagged off the first fully India-made suburban train 'Medha'. The train will save foreign exchange worth ₹32 crore per rake along with 25% saving in the manufacturing cost. It can run at a maximum speed of 105 km per hour, and has been fitted with LED lights and GPS-based passenger information system.

Answer: B) Coins Explanation: Numismatics is the study or collection of currency, including coins, tokens, paper money, and related objects.

Let the required number be 'X' Condition 1 :   XX = 2X  => 2X2 = X => X = 12   Condition 2 : X × X = X2=> X = 12   Therefore, 12 is the number which becomes double when it is divided by itself and becomes half when it is multiplied by itself.

Answer: C) 20 Explanation: We know that  40% = 40100 = 25⇒25 x 244 x ? = 48? = 48 x 5 x 42 x 24 = 20

Answer: C) 6 Explanation: There are six permanent members: China, Kazakhstan, Kyrgyzstan, Russia, Tajikistan, Uzbekistan. Soon India and Pakistan will also join it.

Answer: C) 5223 Explanation: Given,    25% of three-seventh of 26% of a number is 145.5   Let the required number be 'N'   i.e, 25100x37x26100xN = 145.5   N = 145.5x7x1000075x26   => N = 5223.07