She said, “What a lovely dress it is”. (choose the correct indirect speech)
a) She exclaimed that it is a lovely dress
b) She exclaimed that it was a lovely dress
c) She exclaimed that what a lovely dress it was
If x = 3 is one solution to the question
x2 + rx – 20 = 4, then r = __________?
a) – 8
b) – 5
c) – 3
d) 5
Explanation: (3)2 + 3r - 20 = 4
9 + 3r - 20 = 4
Combine like terms:3r - 11 = 4
Add 11 to both sides:
3r = 4 + 11
3r = 15
Divide both sides by 3:
r = 15/3 r = 5
Therefore, r is equal to 5.
What was the original price of an item if discount of 20 percent reduced the price to RS.100?
a) Rs.80
b) Rs.120
c) Rs.125
d) Rs.150
Explanation: To find the original price of an item, we can use the following equation:
Original Price - Discount = Final Price
Let's denote the original price as "P". According to the given information, the discount is 20 percent, which can be expressed as 20/100 or 0.2. The final price is Rs. 100. Plugging these values into the equation, we have:
P - 0.2P = 100
Simplifying the equation: 0.8P = 100
Dividing both sides by 0.8:
P = 100 / 0.8 P = 125
Therefore, the original price of the item was Rs. 125.
The most electronegative element of the periodic table is:
a) Oxygen
b) Fluorine
c) Chlorine
d) Nitrogen
The refractive index of glass is:
a) 1.3
b) 1.5
c) 2.42
d) 1.44
