A number is made up of 3 digits. The digit in the hundred's place is twice the digit in the one's place. The digit in the ten's place is 1 less than the digit in the one's place. If the digit in the ten's place is 2, what is the number? A623 B432 C622 D224
Let ABC be a right angled triangle in which AB = 3 cm, BC = 4 cm and ∠B = 90°. BD is the perpendicular from B on AC. The circle through B, C, D is drawn. Given below are steps of construction of tangents from A to this circle. Identify the wrong step. Steps of construction : Step I : Draw ΔABC and perpendicular BD from B on AC. Step II : Draw a circle with BC as a diameter. This circle will pass through D. Step III : Let O be the mid point of BC. Join AO. Step IV : Draw a circle with AO as radius. This circle cuts the circle drawn in step II at B and P. Step V : Join AP. AP and AB are desired tangents drawn from A to the circle passing through B, C and D. AOnly I BOnly IV COnly III DOnly V
Mohan made the given picture graph to show the number of birds he counted on a field trip. What is the total number of Starlings, Crows and Blue Jay Mohan counted? A4 B8 C12 D16
Mohan made the given picture graph to show the number of birds he counted on a field trip. What was the total number of Robin birds that Mohan counted? A4 B8 C12 D16
The thickness of a hollow metallic cylinder is 2 cm. It is 70 cm long with outer radius of 14 cm. Find the volume of the metal used in making the cylinder, assuming that it is open at both the ends. Also find its weight if the metal weighs 8 g per cm3. A10440 cm3, 91250 g B13440 cm3, 90000 g C11440 cm3, 91520 g DNone of these
A shopkeeper mixed kg of white rice with kg of brown rice. He packed them into 5 packets of equal weight. What was the weight of each packet of rice? A2 Kg B3 Kg C4 Kg D5 Kg
If × = 100, ÷ 2 = and + + + + = 100 ÷ , then find the value of . A25 B10 C5 D4
In a school, there are 40 students in which boys and girls are in the ratio 3 : 1. The mean age of the boys is 20 years and the mean age of the girls is 18 years. If there is increase in girls by 5 and decrease in boys by 10, then find the new average age (approx.) when the students joining or leaving doesn't change the average age of boys and girls respectively. A 15 years B 19 years C 16 years D Can't say
Find the difference between the greatest and the smallest 8-digit numbers formed by using the digits 7, 4, 2, 8, 6, 1, 5, 0 (using each digit only once). A77408532 B7470838 C6434534 D57408532
If and then A B C D