Which of the following statement is/are true?

Statement A: When a weed spp. is already resistance to a herbicide shows resistance to other herbicides of the same chemical class to which it had never been exposed or shows resistance to two or more herbicide due to a single resistance mechanism is called as cross-resistance.

Statement B: Resistance through which a spp. shows resistance to herbicide of different chemical classes having a different mode of action is called multiple resistance.

If P is the amount invested at 5% p.a compounded half yearly for 2 years, what would be the amount received at the end of 2 years?

OCR stands for __________

The value of 0∫^π cos³x dx is –

Find the mode of the following data:

6,15,18,6,18,11,23,22,6,18,15,22,12

The median of the following distribution is:

If a line has direction ratios 2, -1, -2, determine its direction cosines.

If A = {{2}, {(3,4}, {6}} which of the following is correct?

What is the mean of the following data given below:

3,7,9,5,11,13,8,12,15,12,4